The story
From [Term?] + -ciclovir (“bicyclic heterocycle compound”).
Etymology from Wiktionary, CC BY-SA 4.0.
famciclovir
Today it means: A prodrug form C₁₄H₁₉N₅O₄ of the antiviral agent penciclovir that after oral administration is converted to penciclovir by cellular kinases and that is used for the treatment of shingles and herpes genitalis. Full definition →