/ Dictionary / Index P paragenesis: Meaning and Definition of Find definitions for: par•a•gen•e•sis Pronunciation: (par"u-jen'u-sis), [key] — n. Geol. the origin of minerals or mineral deposits in contact so as to affect one another's formation. the order in which the minerals in a rock or vein have crystallized. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. paraformaldehyde parageusia Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language