/ Dictionary / Index T tetrapetalous: Meaning and Definition of Find definitions for: tet•ra•pet•al•ous Pronunciation: (te"tru-pet'l-us), [key] — adj. Bot. having four petals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tetranitrate tetraplegia 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