/ Dictionary / Index P pyramidal: Meaning and Definition of Find definitions for: py•ram•i•dal Pronunciation: (pi-ram'i-dl), [key] — adj. of, pertaining to, or shaped like a pyramid: the pyramidal form. of the nature of a pyramid; pyramidlike. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pyramidal (Thesaurus) pyramid pyramidal tract Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language