/ Dictionary / Index L l.c.a.: Meaning and Definition of Find definitions for: l.c.a. Pronunciation: [key] lowercase alphabet. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. LC LCD Related Content Daily Word Quiz: wary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language