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 organic compounds containing a acetylene (-C≡C-) repeat units, especially any that occur naturally in some composite plants
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
A black polymer, derived from acetylene, containing alternating single and double bonds in a (-CH=CH-) repeat unit; it is an organic semiconductor
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 Proto-Indo-European *pleh1- Proto-Indo-European *polh1ús Ancient Greek πολῠ́ς (polŭ́s)lbor. English poly- French acétylènebor. English acetylene English polyacetylene From poly- + acetylene.
