/ Dictionary / Index L lambdoid: Meaning and Definition of Find definitions for: lamb•doid Pronunciation: (lam'doid), [key] — adj. having the shape of the Greek capital lambda. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lambda particle lambdoidal suture Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language