em·tri·cit·a·bine 
(ĕm′trĭ-sĭtə-bēn′, -sītə-)
(ĕm′trĭ-sĭtə-bēn′, -sītə-)n.
An antiviral drug, C8H10FN3O3S, that is a nucleoside reverse transcriptor inhibitor and is used in combination with other drugs to treat HIV infection or to reduce the risk of HIV infection.
[emtri- (probably Em(ory) University, where the drug was discovered + Tri(angle) Pharmaceuticals, company to which it was licensed) + -citabine, nucleoside analog antiviral and anticancer drug suff.; see ZALCITABINE.]