/ Dictionary / Index C commonly: Meaning and Definition of Find definitions for: com•mon•ly Pronunciation: (kom'un-lē), [key] — adv. usually; generally; ordinarily. in a common manner. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: commonly (Thesaurus) common logarithm common mallow Related Content Daily Word Quiz: denizen Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language