*SET-U

English word origin

Etymology of allyl

Etymology tree Latin ālium Latin allium Proto-Indo-European *swel-der.? Ancient Greek ῡ̔́λη (hū́lē)der. Frenchder. English -yl English allyl From Latin allium (“garlic”) + English -yl.

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In this entry · 1 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

Original entry ↗
noun

The univalent radical, CH₂=CH-CH₂-, existing especially in oils of garlic and mustard.

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

Etymology tree Latin ālium Latin allium Proto-Indo-European *swel-der.? Ancient Greek ῡ̔́λη (hū́lē)der. Frenchder. English -yl English allyl From Latin allium (“garlic”) + English -yl.

Inspect preserved source fields

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

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      "args": {
        "1": "en",
        "2": ":af",
        "3": "la:allium<t:garlic>",
        "4": "-yl",
        "tree": "1",
        "text": "+"
      },
      "expansion": "Etymology tree\nLatin ālium\nLatin allium\nProto-Indo-European *swel-der.?\nAncient Greek ῡ̔́λη (hū́lē)der.\nFrenchder.\nEnglish -yl\nEnglish allyl\n[Appendix:Glossary#derived_terms|Derived]] from\", \"terms\" : [ { \"lang_name\" : \"French\", \"status\" : \"inline\", \"children\" : [ { \"keyword_abbrev\" : \"der.\", \"keyword_label\" : \"Derived from\", \"terms\" : [ { \"children\" : [ { \"keyword_abbrev\" : \"der.\", \"keyword_label\" : \"Derived from\", \"terms\" : [ { \"is_uncertain\" : true, \"children\" : [ ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*swel-\", \"status\" : \"missing\", \"lang\" : \"ine-pro\" } ], \"keyword\" : \"derived\" } ], \"lang_name\" : \"Ancient Greek\", \"term\" : \"ῡ̔́λη\", \"status\" : \"ok\", \"lang\" : \"grc\" } ], \"keyword\" : \"derived\" } ], \"lang\" : \"fr\" } ], \"keyword\" : \"derived\" } ], \"lang_name\" : \"English\", \"term\" : \"-yl\", \"status\" : \"ok\", \"lang\" : \"en\" } ], \"keyword_label\" : \"From\", \"is_group\" : true, \"keyword\" : \"affix\" } ], \"lang_name\" : \"English\", \"term\" : \"allyl\", \"status\" : \"ok\", \"lang\" : \"en\" }\" data-lang=\"en\" data-title=\"allyl\">\nFrom Latin allium (“garlic”) + English -yl."
    },
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  "lexical": [
    {
      "pos": "noun",
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        "The univalent radical, CH₂=CH-CH₂-, existing especially in oils of garlic and mustard."
      ],
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        "especially",
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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 allyl →

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
w-YWxseWw