heterocycle

Heterocyclic compounds are organic compounds that contain a ring structure containing atoms in addition to carbon, such as sulfur, oxygen or nitrogen, as part of the ring. They may be either simple aromatic rings or non-aromatic rings. Some examples are pyridine (C5H5N), pyrimidine (C4H4N2) and dioxane (C4H8O2).
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Noun
1. a compound containing a heterocyclic ring
(synonym) heterocyclic compound, heterocyclic
(hypernym) compound, chemical compound
(hyponym) chelate, chelate compound
2. a ring of atoms of more than one kind; especially a ring of carbon atoms containing at least one atom that is not carbon
(synonym) heterocyclic ring
(hypernym) closed chain, ring

An organic group or molecule containing rings with at least one noncarbon atom on the ring.

heterocycle
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