/ Dictionary / Index T toroidal: Meaning and Definition of Find definitions for: to•roi•dal Pronunciation: (tô-roid'l, tō-, tôr'oi-dl, tōr'-), [key] — adj. Geom. of or pertaining to a torus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: toroidal (Thesaurus) toroid Toronto Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language