noun, plural ODs or OD's.

an overdose of a drug, especially a fatal one.
a person who has taken an overdose of a drug, especially one who has become seriously ill or has died from such an overdose.

verb (used without object), OD'd or ODed or OD'ed, OD'ing or OD·ing.

to take an overdose of a drug.
to die from an an overdose of a drug.
to have or experience an excessive amount or degree of something.

Origin of OD

First recorded in 1955–60

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for od'd


'Od or Odd


euphemistic (used in mild oaths) an archaic word for God




an overdose of a drug

verb OD's, OD'ing or OD'd

(intr) to take an overdose of a drug

Word Origin for OD

C20: from o (ver) d (ose)



abbreviation for

Officer of the Day
Old Dutch
ordnance datum
outside diameter
Also: o.d. military olive drab
Also: O/D banking
  1. on demand
  2. overdraft
  3. overdrawn


odyl or odyle (ˈɒdɪl)


archaic a hypothetical force formerly thought to be responsible for many natural phenomena, such as magnetism, light, and hypnotism
Derived Formsodic, adjective

Word Origin for od

C19: coined arbitrarily by Baron Karl von Reichenbach (1788–1869), German scientist

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for od'd



Doctor of Optometry
oculus dexter (right eye)

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.