/ Dictionary / Index L longa: Meaning and Definition of Find definitions for: lon•ga Pronunciation: (long'gu, lông'-), [key] — n. Music. the second longest note in medieval mensural notation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. long long account Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language