Etymology of Taxon Names
The information below provides a list containing descriptions of the origins of ICTV taxon names starting at the rank of realm and going down to the rank of family. This information is derived from the proposals that were submitted when each taxon was created. Links to these proposals, links to ICTV report chapters, and links to publications (through PMIDs) are provided when available.
We thank Stuart Siddell for compiling this list of name origins. Etymological information for taxa below the rank of family, can be found in the relevant ICTV Online (10th) Report chapters. If you have any comments or corrections, please contact us by sending an email to info@ictv.global.
Filter the list of name origins using the selection options below:
Riboviria
Lineage: Riboviria | Orthornavirae | Pisuviricota | Pisoniviricetes | Sobelivirales
Proposal: 2019.006G.zip
Etymology: from sobemovirus-like; the suffix -virales for order taxa
Lineage: Riboviria | Orthornavirae | Pisuviricota | Pisoniviricetes | Sobelivirales | Alvernaviridae
Proposal: 2009.016a-iP.A.v7.Alvernaviridae.zip
Etymology: from the dinoflagellate host ( Heterocapsa circularisquama, a member of the Alveolata) and RNA for ribonucleic acid, referring to the ssRNA genome of viruses in the family; the suffix -viridae for family taxa
Lineage: Riboviria | Orthornavirae | Pisuviricota | Pisoniviricetes | Sobelivirales | Barnaviridae
Proposal: Ratification_1993.pdf
PubMed ID: 8030251
Etymology: from bacilliform-shaped virus and RNA for ribonucleic acid, referring to the morphology of virions and the genome of viruses in the family; the suffix -viridae for family taxa
Lineage: Riboviria | Orthornavirae | Pisuviricota | Pisoniviricetes | Sobelivirales | Solemoviridae
Proposal: 2017.003P.A.v2.Solemoviridae.zip
Report Chapter: Solemoviridae
Etymology: from Sobemovirus (from Southern bean mosaic virus) and Polemovirus (from potato leafroll virus), two genera in the family; the suffix -viridae for family taxa
Lineage: Riboviria | Orthornavirae | Pisuviricota | Pisoniviricetes | Sobelivirales | Solemoviridae | Enamovirus
Report Chapter: Solemoviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Pisoniviricetes | Sobelivirales | Solemoviridae | Polemovirus
Report Chapter: Solemoviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Pisoniviricetes | Sobelivirales | Solemoviridae | Polerovirus
Report Chapter: Solemoviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Pisoniviricetes | Sobelivirales | Solemoviridae | Sobemovirus
Report Chapter: Solemoviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes
Proposal: 2019.006G.zip
Etymology: from the names of the founding orders (Stellavirales, Patatavirales); the suffix -viricetes for class taxa
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Hypofuvirales
Proposal: 2025.012F.Uc.v3.Hypofuvirales_neworder.zip
Etymology: from Hypoviridae and Fusarviridae, referring to two families in the order; the suffix ‑virales for order taxa
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Hypofuvirales | Fusariviridae
Proposal: 2021.001F.R.Fusariviridae_1newfam.zip
Report Chapter: Fusariviridae
Etymology: from Fusarium graminearum, the host of the first virus characterized in this family; the suffix -viridae for family taxa
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Hypofuvirales | Fusariviridae | Alphafusarivirus
Report Chapter: Fusariviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Hypofuvirales | Fusariviridae | Betafusarivirus
Report Chapter: Fusariviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Hypofuvirales | Fusariviridae | Gammafusarivirus
Report Chapter: Fusariviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Hypofuvirales | Hypoviridae
Proposal: Ratification_1993.pdf
Report Chapter: Hypoviridae
PubMed ID: 16593785
Etymology: from hypovirulence, referring to the fact that some members of the family can induce hypovirulence to host fungi; the suffix -viridae for family taxa
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Hypofuvirales | Hypoviridae | Alphahypovirus
Report Chapter: Hypoviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Hypofuvirales | Hypoviridae | Deltahypovirus
Report Chapter: Hypoviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Hypofuvirales | Hypoviridae | Epsilonhypovirus
Report Chapter: Hypoviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Hypofuvirales | Hypoviridae | Etahypovirus
Report Chapter: Hypoviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Hypofuvirales | Hypoviridae | Gammahypovirus
Report Chapter: Hypoviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Hypofuvirales | Hypoviridae | Thetahypovirus
Report Chapter: Hypoviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Hypofuvirales | Hypoviridae | Zetahypovirus
Report Chapter: Hypoviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Hypofuvirales | Parahypoviridae
Proposal: 2025.012F.Uc.v3.Hypofuvirales_neworder.zip
Etymology: from the Ancient Greek παρά (para), meaning "beside" and Hypoviridae, a sister taxon; the suffix ‑viridae for family taxa
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Hypofuvirales | Parahypoviridae | Betahypovirus
Report Chapter: Hypoviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Patatavirales
Proposal: 2019.006G.zip
Etymology: from the Italian patata meaning "potato", referencing potato virus Y, a member of the taxon; the suffix -virales for order taxa
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Patatavirales | Potyliviridae
Proposal: 2025.009F.Ac.v3.Potyliviridae_newfam.zip
Etymology: from poty-like , referring to the distant relationship to members of the family Potyviridae, in particular to viruses belonging to the genus Potyvirus; the suffix ‑viridae for family taxa
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Patatavirales | Potyviridae
Proposal: Ratification_1993.pdf
Report Chapter: Potyviridae
PubMed ID: 2472047
Etymology: from potato virus Y, a member of the family; the suffix -viridae for family taxa
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Patatavirales | Potyviridae | Arepavirus
Report Chapter: Potyviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Patatavirales | Potyviridae | Bevemovirus
Report Chapter: Potyviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Patatavirales | Potyviridae | Brambyvirus
Report Chapter: Potyviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Patatavirales | Potyviridae | Bymovirus
Report Chapter: Potyviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Patatavirales | Potyviridae | Celavirus
Report Chapter: Potyviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Patatavirales | Potyviridae | Ipomovirus
Report Chapter: Potyviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Patatavirales | Potyviridae | Macluravirus
Report Chapter: Potyviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Patatavirales | Potyviridae | Poacevirus
Report Chapter: Potyviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Patatavirales | Potyviridae | Potyvirus
Report Chapter: Potyviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Patatavirales | Potyviridae | Roymovirus
Report Chapter: Potyviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Patatavirales | Potyviridae | Rymovirus
Report Chapter: Potyviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Patatavirales | Potyviridae | Tritimovirus
Report Chapter: Potyviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Stellavirales
Proposal: 2019.006G.zip
Etymology: from the Latin stella, meaning "star", referrring to astroviruses, which are included in the taxon; the suffix -virales for order taxa
Lineage: Riboviria | Orthornavirae | Pisuviricota | Stelpaviricetes | Stellavirales | Astroviridae
Proposal: ICTV 6th Report.pdf
Report Chapter: Astroviridae
PubMed ID: 15802951
Etymology: from the Greek astron, meaning "star", referring to the star-like appearance of spikes projecting from the surface of virions of viruses in the family; the suffix -viridae for family taxa
Lineage: Riboviria | Orthornavirae | Pisuviricota | Yadokarivirales
Proposal: 2021.005F.R.Yadokarivirales_neworder.zip
Etymology: from the Japanese yadokari (やどかり, 宿借), meaning “room borrower", referring to the the lifestyle (hetero-encapsidation) of yadokariviruses; the suffix -virales for order taxa
Lineage: Riboviria | Orthornavirae | Pisuviricota | Yadokarivirales | Yadokariviridae
Proposal: 2021.005F.R.Yadokarivirales_neworder.zip
Report Chapter: Yadokariviridae
Etymology: from the Japanese yadokari (やどかり, 宿借), meaning “room borrower", referring to the lifestyle (hetero-encapsidation) of viruses in the family; the suffix -viridae for family taxa
Lineage: Riboviria | Orthornavirae | Pisuviricota | Yadokarivirales | Yadokariviridae | Alphayadokarivirus
Report Chapter: Yadokariviridae
Lineage: Riboviria | Orthornavirae | Pisuviricota | Yadokarivirales | Yadokariviridae | Betayadokarivirus
Report Chapter: Yadokariviridae
Lineage: Riboviria | Orthornavirae | Orpoviricetes
Proposal: 2024.008F.Orpoviricetes_newclass.zip
Etymology: from the Finnish orpo meaning orphan; the suffix -viricetes for class taxa
Lineage: Riboviria | Orthornavirae | Orpoviricetes | Bormycovirales
Proposal: 2024.008F.Orpoviricetes_newclass.zip
Etymology: from ormycovirus and the letter B, randomly selected; the suffix -virales for order taxa
Lineage: Riboviria | Orthornavirae | Orpoviricetes | Bormycovirales | Alphaormycoviridae
Proposal: 2024.008F.Orpoviricetes_newclass.zip
Etymology: from the Ancient Greek ἄλφα (álpha), the first letter of the Greek alphabet, and ormycovirus; the suffix -viridae for family taxa
Lineage: Riboviria | Orthornavirae | Orpoviricetes | Bormycovirales | Deltaormycoviridae
Proposal: 2025.004F.Deltanormycoviridae_rename.zip
Etymology: fom the fourth Greek letter delta, the Finnish orpo, meaning “orphan” and the Greek mýkēs (myco), meaning “fungi”; the suffix ‑viridae for family taxa
Lineage: Riboviria | Orthornavirae | Orpoviricetes | Formycovirales
Proposal: 2024.008F.Orpoviricetes_newclass.zip
Etymology: from ormycovirus and the letter F, randomly selected; the suffix -virales for order taxa
Lineage: Riboviria | Orthornavirae | Orpoviricetes | Formycovirales | Betaormycoviridae
Proposal: 2024.008F.Orpoviricetes_newclass.zip
Etymology: from the Ancient Greek βῆτα (bêta), the second letter of the Greek alphabet, and ormycovirus; the suffix -viridae for family taxa
Lineage: Riboviria | Orthornavirae | Orpoviricetes | Formycovirales | Gammaormycoviridae
Proposal: 2024.008F.Orpoviricetes_newclass.zip
Etymology: om the Ancient Greek γάμμα (gámma), the third letter of the Greek alphabet, and ormycovirus ; the suffix -viridae for family taxa
Lineage: Riboviria | Orthornavirae | Birnaviridae
Proposal: Ratification_1984.pdf
Report Chapter: Birnaviridae
PubMed ID: 6743022
Etymology: from the Latin bi meaning “two”, and RNA for ribonucleic acid, referring to the bisegmented nature of the genome, and the presence of dsRNA, in viruses of the family; the suffix -viridae for family taxa
Lineage: Riboviria | Orthornavirae | Birnaviridae | Aquabirnavirus
Report Chapter: Birnaviridae
Lineage: Riboviria | Orthornavirae | Birnaviridae | Avibirnavirus
Report Chapter: Birnaviridae
Lineage: Riboviria | Orthornavirae | Birnaviridae | Blosnavirus
Report Chapter: Birnaviridae
Lineage: Riboviria | Orthornavirae | Birnaviridae | Dronavirus
Report Chapter: Birnaviridae
Lineage: Riboviria | Orthornavirae | Birnaviridae | Entomobirnavirus
Report Chapter: Birnaviridae
Lineage: Riboviria | Orthornavirae | Birnaviridae | Ronavirus
Report Chapter: Birnaviridae
Lineage: Riboviria | Orthornavirae | Birnaviridae | Telnavirus
Report Chapter: Birnaviridae
Lineage: Riboviria | Orthornavirae | Permutotetraviridae
Proposal: 2010.001a-qI.A.v4.Tetraviridae.zip
Report Chapter: Permutotetraviridae
Etymology: from the Latin permutare, meaninmg "to change thoroughly" and the Ancient Greek τετρα (tetra), the Greek cardinal 4, referring to the type of RdRP (replicase) whose active site is permuted and the T=4 capsid architecture of viruses in the family; the suffix -viridae for family taxa
Lineage: Riboviria | Pararnavirae
Proposal: 2019.006G.zip
Etymology: from the Greek παρά (pará), meaning "besides" or "next to", and RNA for ribonucleic acid, referring to the second kingdom in the realm Riboviria ; the suffix -virae for kingdom taxa
Lineage: Riboviria | Pararnavirae | Artverviricota
Proposal: 2019.006G.zip
Etymology: from reverse transcriptase when read backwards, referring to the mode of genome replication of viruses in the taxon; the suffix -viricota for phylum taxa
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes
Proposal: 2019.006G.zip
Etymology: from reverse transcriptase, referring to the mode of genome replication of viruses in the taxon; the suffix -viricetes for class taxa
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Blubervirales
Proposal: 2019.006G.zip
Etymology: to honour Barry Blumberg for his role in hepatitis B research; the suffix -virales for order taxa
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Blubervirales | Hepadnaviridae
Proposal: Ratification_1990.pdf
Report Chapter: Hepadnaviridae
PubMed ID: 4113490
Etymology: from the Greek hepar, meaning “liver” and DNA for deoxyribonucleic acid, referring to the infection of liver tissues and the deoxyribonucleic acid genome of viruses in the family; the suffix -viridae for family taxa
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Blubervirales | Hepadnaviridae | Avihepadnavirus
Report Chapter: Hepadnaviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Blubervirales | Hepadnaviridae | Herpetohepadnavirus
Report Chapter: Hepadnaviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Blubervirales | Hepadnaviridae | Metahepadnavirus
Report Chapter: Hepadnaviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Blubervirales | Hepadnaviridae | Orthohepadnavirus
Report Chapter: Hepadnaviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Blubervirales | Hepadnaviridae | Parahepadnavirus
Report Chapter: Hepadnaviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales
Proposal: 2017.013D.A.v1.Ortervirales.zip
Etymology: from orter, an inversion of retro, which stands for reverse transcription, referring to the mode of genome replication of viruses in the taxon; the suffix -virales for order taxa
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Belpaoviridae
Proposal: 2017.001D.A.v1.Belpaoviridae.zip
Report Chapter: Belpaoviridae
Etymology: from Drosophila melanogaster Bel virus and the Bombyx mori Pao virus, two members of the family; the suffix -viridae for family taxa
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Belpaoviridae | Semotivirus
Report Chapter: Belpaoviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Caulimoviridae
Proposal: Ratification_1997.pdf
Report Chapter: Caulimoviridae
PubMed ID: 14433226
Etymology: from cauliflower mosaic virus, a member of the family; the suffix -viridae for family taxa
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Caulimoviridae | Badnavirus
Report Chapter: Caulimoviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Caulimoviridae | Caulimovirus
Report Chapter: Caulimoviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Caulimoviridae | Cavemovirus
Report Chapter: Caulimoviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Caulimoviridae | Dioscovirus
Report Chapter: Caulimoviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Caulimoviridae | Petuvirus
Report Chapter: Caulimoviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Caulimoviridae | Rosadnavirus
Report Chapter: Caulimoviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Caulimoviridae | Solendovirus
Report Chapter: Caulimoviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Caulimoviridae | Soymovirus
Report Chapter: Caulimoviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Caulimoviridae | Tungrovirus
Report Chapter: Caulimoviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Caulimoviridae | Vaccinivirus
Report Chapter: Caulimoviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Metaviridae
Proposal: Ratification_1998.pdf
Report Chapter: Metaviridae
PubMed ID: 7760826
Etymology: from the late Latin metathesis, meaning “transposition”, referring to the family of retrotransposons; the suffix -viridae for family taxa
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Metaviridae | Errantivirus
Report Chapter: Metaviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Metaviridae | Metavirus
Report Chapter: Metaviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Pseudoviridae
Proposal: Ratification_1998.pdf
Report Chapter: Pseudoviridae
PubMed ID: 12411593
Etymology: from the Ancient Greek ψευδής (pseudes), meaning "false", referring to an evolutionary relationship of family members to viruses with extracellular virions, although they themselves have no extracellular phase; the suffix -viridae for family taxa
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Pseudoviridae | Hemivirus
Report Chapter: Pseudoviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Pseudoviridae | Pseudovirus
Report Chapter: Pseudoviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Pseudoviridae | Sirevirus
Report Chapter: Pseudoviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Retroviridae
Proposal: Ratification_1975.pdf
Report Chapter: Retroviridae
PubMed ID: 21433350
Etymology: from the Latin retro, meaning “backwards”, referring to the activity of reverse transcriptase which transfers genetic information from RNA “back” to DNA during replication of viruses in the family; the suffix -viridae for family taxa
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Retroviridae | Orthoretrovirinae
Report Chapter: Retroviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Retroviridae | Orthoretrovirinae | Alpharetrovirus
Report Chapter: Retroviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Retroviridae | Orthoretrovirinae | Betaretrovirus
Report Chapter: Retroviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Retroviridae | Orthoretrovirinae | Deltaretrovirus
Report Chapter: Retroviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Retroviridae | Orthoretrovirinae | Epsilonretrovirus
Report Chapter: Retroviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Retroviridae | Orthoretrovirinae | Gammaretrovirus
Report Chapter: Retroviridae
Lineage: Riboviria | Pararnavirae | Artverviricota | Revtraviricetes | Ortervirales | Retroviridae | Orthoretrovirinae | Lentivirus
Report Chapter: Retroviridae
