Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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noun
any of a class of unsaturated ketones, having a general formula R1R2C=C=O, that react as if they were inner acid anhydrides
Definition source: English Wiktionary via Wiktextract
Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
the parent compound of this class, CH2=C=O, an unstable, reactive colourless gas
Definition source: English Wiktionary via Wiktextract
Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
Etymology tree German Ketonbor. English ketone English keto- English -ene English ketene From keto- + -ene.
Across languages
1 source translations are retained for this English entry.
