/ Dictionary / Index I idiograph: Meaning and Definition of Find definitions for: id•i•o•graph Pronunciation: (id'ē-u-graf", -gräf"), [key] — n. a mark or signature characteristic of a particular person, organization, etc.; trademark. Cf. logotype (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. idioglossia idiographic Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language