/ Dictionary / Index L lordosis: Meaning and Definition of Find definitions for: lor•do•sis Pronunciation: (lôr-dō'sis), [key] an abnormal forward curvature of the spine in the lumbar region, resulting in a swaybacked posture. Cf. kyphosis, scoliosis. a posture assumed by some female mammals during mating, in which the back arches downward. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lordosis (Thesaurus) Lord of the Flies* Lord Privy Seal Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language