HETEROCYCLIC

\hˌɛtɹə͡ʊsˈa͡ɪklɪk], \hˌɛtɹə‍ʊsˈa‍ɪklɪk], \h_ˌɛ_t_ɹ_əʊ_s_ˈaɪ_k_l_ɪ_k]\
Sort: Oldest first
 
2006 - WordNet 3.0
By Princeton University
 
1920 - A practical medical dictionary.
By Stedman, Thomas Lathrop