/ Dictionary / Index M monofilament: Meaning and Definition of Find definitions for: mon•o•fil•a•ment Pronunciation: (mon"u-fil'u-munt), [key] — n. a single, generally large filament of synthetic fiber. Cf.(def. 2). —adj. made of such a filament: a monofilament fishing line. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. monoestrous monogamic Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language