/ Dictionary / Index T tetraploid: Meaning and Definition of Find definitions for: tet•ra•ploid Pronunciation: (te'tru-ploid"), [key] — adj. Biol. having a chromosome number that is four times the basic or haploid number. —n. a tetraploid cell or organism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tetraplegia tetrapod Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language