ganˈsīklə(ˌ)vir noun
( -s )
Etymology: perhaps from g u an osine + -ciclovir , alteration of -cyclovir (as in acyclovir — herein)
: an antiviral drug C 9 H 13 N 5 O 4 related to acyclovir and used especially in the treatment of cytomegalovirus retinitis in immunocompromised patients