/ Dictionary / Index L lemniscate: Meaning and Definition of Find definitions for: lem•nis•cate Pronunciation: (lem-nis'kit, lem'nis-kāt", -kit), [key] — n. Analyt. Geom. a plane curve generated by the locus of the point at which a variable tangent to a rectangular hyperbola intersects a perpendicular from the center to the tangent. Equation:=2acos&thgr;. Also called r Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Lemminkäinen lemniscus Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language