/ Dictionary / Index G gladiolus: Meaning and Definition of Find definitions for: glad•i•o•lus Pronunciation: (glad"ē-ō'lus), [key] — pl. -lus, -li -lus•es -li any plant of the genus Gladiolus, of the iris family, native esp. to Africa, having erect, sword-shaped leaves and spikes of flowers in a variety of colors. the middle and largest segment of the sternum. Cf. manubrium (def. 2a), Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: gladiolus (Thesaurus) gladiola gladius Related Content Daily Word Quiz: designate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language