/ Dictionary / Index P pelargonium: Meaning and Definition of Find definitions for: pel•ar•go•ni•um Pronunciation: (pel"är-gō'nē-um, -ur-), [key] — n. any plant of the genus Pelargonium, the cultivated species of which are usually called geranium. Cf.(def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pelargonium (Thesaurus) pelargonic acid Pelasgi Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language