/ Dictionary / Index D DL: Meaning and Definition of Find definitions for: DL Pronunciation: [key] diesel. dl Pronunciation: [key] deciliter; deciliters. D/L Pronunciation: [key] demand loan. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dl (Thesaurus) dkm D layer Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language