/ Dictionary / Index D decadrachm: Meaning and Definition of Find definitions for: dec•a•drachm Pronunciation: (dek'u-dram"), [key] — n. a silver coin of ancient Greece equal to 10 drachmas. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. decadent Decadron Related Content Daily Word Quiz: diaphanous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language