/ Dictionary / Index M monosepalous: Meaning and Definition of Find definitions for: mon•o•sep•al•ous Pronunciation: (mon"u-sep'u-lus), [key] — adj. Bot. gamosepalous. having only one sepal, as a calyx. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. monoscope monosodium Related Content Daily Word Quiz: verbose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language