imidazole

noun Chemistry.

1. a colorless, crystalline, water-soluble, heterocyclic compound, C3H4N2, used chiefly in organic synthesis.

noun

1. Also called: glyoxaline, iminazole a white crystalline basic heterocyclic compound; 1,3-diazole. Formula: C 3 H 4 N 2
2. any substituted derivative of this compound

n.

1. An organic crystalline base that is an inhibitor of histamine.