vidarabine
noun
vid·ar·a·bine
| \ vid-ˈär-ə-ˌbēn
\
\
Medical Definition of vidarabine
: an antiviral agent C10H13N5O4·H2O derived from adenine and arabinoside and used especially to treat keratitis and encephalitis caused by the herpes simplex virus
— called also adenine arabinoside, ara-A