/ Dictionary / Index E ellipsoidal: Meaning and Definition of Find definitions for: el•lip•soi•dal Pronunciation: (i-lip-soid'l, el"ip-, ē"lip-), [key] — adj. pertaining to or having the form of an ellipsoid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ellipsoidal (Thesaurus) ellipsoid ellipsometer Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language