/ Dictionary / Index P petalous: Meaning and Definition of Find definitions for: pet•al•ous Pronunciation: (pet'l-us), [key] — adj. having petals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: petalous (Thesaurus) petaloid Petaluma Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language