/ Dictionary / Index D decigram: Meaning and Definition of Find definitions for: dec•i•gram Pronunciation: (des'i-gram"), [key] — n. a unit of mass or weight equal to gram (1.543 grains). Abbr.: dg Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: decigram (Thesaurus) deciduous tooth decile Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language