/ Dictionary / Index L longeron: Meaning and Definition of Find definitions for: lon•ge•ron Pronunciation: (lon'jur-un), [key] — n. Aeron. a main longitudinal brace or support on an airplane. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. long-eared owl long ess 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