/ Dictionary / Index P -plasty: Meaning and Definition of Find definitions for: -plasty Pronunciation: [key] a combining form with the meanings “molding, formation” “surgical repair, plastic surgery,” used in the formation of compound words: angioplasty; galvanoplasty; heteroplasty. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. plastron -plasy Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language