*SET-U

English word origin

Etymology of virus

PIE word *wisós Etymology tree Proto-Indo-European *weys- Proto-Indo-European *wisós Proto-Italic *weizos Latin vīrusbor. Middle English virus English virus From Middle English virus, from Latin vīrus (“poison, slime, ve

2 source sectionsExtended source reportWiktionary original ↗
In this entry · 2 source sections

The source etymologies

Wiktionary via Kaikki / Wiktextract

The source reports below are imported and unreviewed by *SET-U. Separate numbered origins and differing source variants are preserved; agreement within this extraction is not independent corroboration.

Unnumbered source etymology · variant 1/2

Original entry ↗
noun

A submicroscopic, non-cellular structure that consists of a core of DNA or RNA surrounded by a protein coat, that requires a living host cell to replicate, and that sometimes causes disease in the host organism (such agents are often classed as nonliving infectious particles and less often as microorganisms). · A species thereof. · An individual particle thereof: synonym of virion. · A quantity of such infectious agents, considered en masse.

Selected source glosses provide context, not a complete modern definition inventory

PIE word *wisós Etymology tree Proto-Indo-European *weys- Proto-Indo-European *wisós Proto-Italic *weizos Latin vīrusbor. Middle English virus English virus From Middle English virus, from Latin vīrus (“poison, slime, venom”), via rhotacism from Proto-Italic *weizos, from Proto-Indo-European *wisós (“fluidity, slime, poison”). First use in the computer context by David Gerrold in his 1972 book When HARLIE Was One.

Relationships mentioned by the source

These are extracted mentions, not a timeline or a verified sequence of immediate parents.

This page abbreviates 5 auxiliary source items. The etymology narrative is not shortened. Omission counts are available in the audit fields below; consult the original for complete auxiliary material.

Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

{
  "templates": [
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      "name": "dercat",
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        "1": "en",
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      "expansion": "PIE word\n *wisós"
    },
    {
      "name": "ety",
      "args": {
        "1": "en",
        "2": ":inh",
        "3": "enm:virus<ety:bor<la:vīrus>>",
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      "expansion": "Etymology tree\nProto-Indo-European *weys-\nProto-Indo-European *wisós\nProto-Italic *weizos\nLatin vīrusbor.\nMiddle English virus\nEnglish virus\n[Appendix:Glossary#loanword|Borrowed]] from\", \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"id\" : \"poison\", \"children\" : [ { \"terms\" : [ { \"id\" : \"poison\", \"children\" : [ { \"terms\" : [ { \"id\" : \"flow\", \"children\" : [ ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*weys-\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"From\", \"keyword\" : \"from\" } ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*wisós\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Italic\", \"term\" : \"*weizos\", \"lang\" : \"itc-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Latin\", \"term\" : \"vīrus\", \"status\" : \"ok\", \"lang\" : \"la\" } ], \"keyword\" : \"bor\" } ], \"lang_name\" : \"Middle English\", \"term\" : \"virus\", \"status\" : \"inline\", \"lang\" : \"enm\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"English\", \"term\" : \"virus\", \"status\" : \"ok\", \"lang\" : \"en\" }\" data-lang=\"en\" data-title=\"virus\">"
    },
    {
      "name": "inh",
      "args": {
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        "2": "enm",
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      "expansion": "Middle English virus"
    },
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      "name": "der",
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      "*weizos",
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      "vīrus",
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      "virus",
      "virus#Middle_English"
    ],
    [
      "virus",
      "virus#Middle_English"
    ],
    [
      "vīrus",
      "virus#Latin"
    ],
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      "rhotacism",
      "rhotacism"
    ],
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  ],
  "references": [],
  "descendants": [
    {
      "lang": "Amharic",
      "lang_code": "am",
      "word": "ቫይረስ",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "vayräs"
    },
    {
      "lang": "Bengali",
      "lang_code": "bn",
      "word": "ভাইরাস",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "bhairaś"
    },
    {
      "lang": "Burmese",
      "lang_code": "my",
      "word": "ဗိုင်းရပ်စ်",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "buing:rapc"
    },
    {
      "lang": "Dhivehi",
      "lang_code": "dv",
      "word": "ވައިރަސް",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "vairas"
    },
    {
      "lang": "Japanese",
      "lang_code": "ja",
      "word": "バイラス",
      "raw_tags": [
        "borrowed"
      ]
    },
    {
      "lang": "Kannada",
      "lang_code": "kn",
      "word": "ವೈರಸ್",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "vairas"
    },
    {
      "lang": "Korean",
      "lang_code": "ko",
      "word": "바이러스",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "baireoseu"
    },
    {
      "lang": "Lao",
      "lang_code": "lo",
      "word": "ໄວຣັສ",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "wai ras"
    },
    {
      "lang": "Malay",
      "lang_code": "ms",
      "word": "virus",
      "raw_tags": [
        "borrowed"
      ]
    },
    {
      "lang": "Malayalam",
      "lang_code": "ml",
      "word": "വൈറസ്",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "vaiṟasŭ"
    },
    {
      "lang": "Maltese",
      "lang_code": "mt",
      "word": "vajrus",
      "raw_tags": [
        "borrowed"
      ]
    },
    {
      "lang_code": "pa",
      "lang": "Punjabi",
      "raw_tags": [
        "borrowed"
      ],
      "descendants": [
        {
          "lang": "Gurmukhi script",
          "lang_code": "pa",
          "word": "ਵਾਇਰਸ",
          "roman": "vāiras"
        },
        {
          "lang": "Shahmukhi script",
          "lang_code": "pa",
          "word": "وائرس",
          "roman": "vā'irs"
        }
      ]
    },
    {
      "lang": "Sinhalese",
      "lang_code": "si",
      "word": "වෛරස",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "wairasa"
    },
    {
      "lang": "Tagalog",
      "lang_code": "tl",
      "word": "virus",
      "raw_tags": [
        "borrowed"
      ]
    },
    {
      "lang": "Telugu",
      "lang_code": "te",
      "word": "వైరస్",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "vairas"
    },
    {
      "lang": "Thai",
      "lang_code": "th",
      "word": "ไวรัส",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "wai-rát"
    },
    {
      "lang": "Urdu",
      "lang_code": "ur",
      "word": "وائرس",
      "raw_tags": [
        "borrowed"
      ]
    },
    {
      "lang": "Welsh",
      "lang_code": "cy",
      "word": "feirws",
      "raw_tags": [
        "borrowed"
      ]
    }
  ],
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    {
      "pos": "noun",
      "glosses": [
        "A submicroscopic, non-cellular structure that consists of a core of DNA or RNA surrounded by a protein coat, that requires a living host cell to replicate, and that sometimes causes disease in the host organism (such agents are often classed as nonliving infectious particles and less often as microorganisms).",
        "A species thereof.",
        "An individual particle thereof: synonym of virion.",
        "A quantity of such infectious agents, considered en masse."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
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      "sourceRecordOrdinal": 196552
    }
  ],
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}

Unnumbered source etymology · variant 2/2

Original entry ↗
verb

To send or infect an electronic device with a computer virus.

Selected source glosses provide context, not a complete modern definition inventory

PIE word *wisós Etymology tree Proto-Indo-European *weys- Proto-Indo-European *wisós Proto-Italic *weizos Latin vīrusbor. Middle English virus English virus From Middle English virus, from Latin vīrus (“poison, slime, venom”), via rhotacism from Proto-Italic *weizos, from Proto-Indo-European *wisós (“fluidity, slime, poison”). First use in the computer context by David Gerrold in his 1972 book When HARLIE Was One.

Relationships mentioned by the source

These are extracted mentions, not a timeline or a verified sequence of immediate parents.

Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

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      "expansion": "Proto-Indo-European"
    },
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      "expansion": "PIE word\n *wisós"
    },
    {
      "name": "ety",
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        "1": "en",
        "2": ":inh",
        "3": "enm:virus<ety:bor<la:vīrus>>",
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    },
    {
      "name": "inh",
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        "1": "en",
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      "expansion": "Middle English virus"
    },
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    },
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    ],
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      "*wisós",
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    ],
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      "*weizos",
      "Reconstruction:Proto-Italic/weizos#Proto-Italic:_poison"
    ],
    [
      "vīrus",
      "virus#Latin"
    ],
    [
      "virus",
      "virus#Middle_English"
    ],
    [
      "virus",
      "virus#Middle_English"
    ],
    [
      "vīrus",
      "virus#Latin"
    ],
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    ]
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      "pos": "verb",
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        "To send or infect an electronic device with a computer virus."
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Where this record stops

This page does not supply an independently verified sound-change sequence, first-use manuscript or complete family tree unless a cited analysis explicitly establishes one. Missing detail here is a limit of this record—not a claim that humanity knows nothing more.

An older meaning does not determine what a word must mean today. Follow the sources, preserve disagreements, and keep ancestry separate from interpretation.

Contribute located evidence for virus →

Source and snapshot

Imported from Wiktionary contributors; extracted by Tatu Ylonen / Wiktextract / Kaikki.org. Selected fields are reformatted and grouped; wording, source identity and etymology sections are retained. CC-BY-SA-4.0 applies to the imported source material.

Dump: 2026-10-01 · Extracted: 2026-10-30. These are snapshot dates, not the word’s first attestation or the page’s revision date.

Source entry and bibliography ↗Wiktionary revision history ↗Acquisition and rights ledger
Machine-source provenance
Source SHA-256
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Import run
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Permanent entry ID
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