/ Dictionary / Index F feldspathoid: Meaning and Definition of Find definitions for: feld•spath•oid Pronunciation: (feld'spa-thoid", fel'-), [key] —adj. of or pertaining to a group of minerals similar in chemical composition to certain feldspars except for a lower silica content. —n. a mineral of this group, as nepheline. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. feldspathic Felice Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language