RhymeZone: aciclovir definitions

Definitions of aciclovir:

noun: (pharmacology) A cyclic synthetic nucleoside C₈H₁₁N₅O₃ used as an antiviral drug (trademarks Avirax, Zovirax) chiefly in the treatment of chicken pox, shingles, the genital form of herpes simplex, and AIDS.

(Definitions from Wiktionary)