Breadcrumb Home > Dictionary Cite Meaning of pseudomorph Find definitions for: pseu•do•morph Pronunciation: (s'du-môrf"), [key] — n. an irregular or unclassifiable form. a mineral having the outward appearance of another mineral that it has replaced by chemical action. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Related Content Daily Word Quiz: recherch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language