viridofulvin noun1 •The polyhydroxy polyunsaturated macrocyclic ketone 16,18,20,22,24,26,28,30,32-nonahydroxy-17,35-dimethyl-1-oxacyclohexatriaconta-3,5,7,9,11,13,33-heptaen-2-one.Other pharmacologically unrelated medications that happen to include the word part vir, such as virginiamycin and viridofulvin, may be misinterpreted as antivirals. — 2015