Meaning

noun a compound containing a heterocyclic ring

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

originEtymology 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.

Etymology from Wiktionary, CC BY-SA 3.0