/ Dictionary / Index M meniscus: Meaning and Definition of Find definitions for: me•nis•cus Pronunciation: (mi-nis'kus), [key] — pl. -nis•ci -nis•cus•es. a crescent or a crescent-shaped body. the convex or concave upper surface of a column of liquid, the curvature of which is caused by surface tension. a lens with a crescent-shaped section; a concavo-convex or convexo-concave lens. See diag. under a disk of cartilage between the articulating ends of the bones in a joint. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: meniscus (Thesaurus) meniscocytosis Menkure Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language