/ Dictionary / Index H H and D curve: Meaning and Definition of Find definitions for: H and D curve Pronunciation: [key] — Photog. Photog. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. handcuff hand-deliver Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language