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
A heterocyclic compound or ring.
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 ring of atoms of more than one kind; especially a ring of carbon atoms containing at least one atom that is not carbon
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: heterocyclic ring
Antonyms: none provided
Broader terms: closed chain, ring
noun
a compound containing a heterocyclic ring
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: heterocyclic compound, heterocyclic
Antonyms: none provided
Broader terms: compound, chemical compound
Narrower terms: chelate, chelate compound
History
Etymology tree Proto-Indo-European *sem- Proto-Indo-European *sḿ̥teros Proto-Hellenic *hə́teros Ancient Greek ἕτερος (héteros)lbor. English hetero- Proto-Indo-European *kwel- Proto-Indo-European *kwékwlos Ancient Greek κῠ́κλος (kŭ́klos)der. Late Latin cyclusbor. Middle English cicle English cycle English heterocycle From hetero- + cycle.
Across languages
5 source translations are retained for this English entry.
