/ Dictionary / Index D decimeter: Meaning and Definition of Find definitions for: dec•i•me•ter Pronunciation: (des'u-mē"tur), [key] — n. a unit of length equal to meter. Abbr.: dm Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: decimeter (Thesaurus) décime* decimus Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language