/ Dictionary / Index E ellipsoid: Meaning and Definition of Find definitions for: el•lip•soid Pronunciation: (i-lip'soid), [key] — n. a solid figure all plane sections of which are ellipses or circles. Typical equation: (x/a) + (y/b) + (z/c) = 1. —adj. ellipsoidal. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ellipsoid (Thesaurus) ellipsograph ellipsoidal Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language