/ Dictionary / Index L leading: Meaning and Definition of Find definitions for: lead•ing Pronunciation: (lē'ding), [key] — adj. chief; principal; most important; foremost: a leading toy manufacturer. coming in advance of others; first: We rode in the leading car. directing, guiding. —n. the act of a person or thing that leads. lead•ing Pronunciation: (led'ing), [key] — n. a covering or framing of lead: the leading of a stained-glass window. lead (def. 7). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: leading (Thesaurus) lead-in leading article Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language