[mon-] or mono- comb form [ME, fr. MF & L; MF, fr. L, fr. Gk, fr. monos alone, single--more at monk] 1: one: single: alone "monoplane" "monodrama"
2. a: containing one (usu. specified) atom, radical, or group "monohydroxy" b: monomolecular "monolayer"