/ Dictionary / Index P -ploid: Meaning and Definition of Find definitions for: -ploid Pronunciation: [key] a combining form meaning “having chromosome sets” of the kind or number specified by the initial element: hexaploid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Ploeşti ploidy Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language