tricyclic adjective & noun.
[trʌɪ'sʌɪklɪk, -'sɪk-] L19.[from TRI- + Greek kuklos circle + -IC.]A. adjective. Having three circles or rings;
Chemistry &
Pharmacology having three usu. fused rings of atoms in the molecule.
L19.b. noun.
Pharmacology. A tricyclic antidepressant.
L20. [TahlilGaran] English Dictionary ▲