Question: what is the definition for the root word mono?
Answer: mono-, prefix. mono- comes from Greek, where it has the meaning "one, single, lone. '' This meaning is found in such words as: monarch, monastery, monochrome, monocle, monogamy, monogram, monograph, monolingual, monolith, monologue, mononucleosis, monopoly, monorail, monosyllable, monotonous.