/ Dictionary / Index T TTL meter: Meaning and Definition of Find definitions for: TTL meter Pronunciation: [key] — Photog. Photog. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. TT TTS Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language