WordReference Random House Learner's Dictionary of American English © 2019
OD /ˈoʊˈdi/USA pronunciation   n., pl.  ODs or OD's, v.,  OD'd or ODed,  OD'•ing. 
n. [countable]
  1. Drugsan overdose of a drug, esp. a fatal one.
  2. Drugsa person who has become seriously ill or has died from a drug overdose.

v. [no object]
  1. Drugsto take a drug overdose.
  2. Drugsto die from a drug overdose.
  3. to have or take too much of something:I was OD'ing on caffeine.

WordReference Random House Unabridged Dictionary of American English © 2019
od  (od, ōd),USA pronunciation n. 
  1. a hypothetical force formerly held to pervade all nature and to manifest itself in magnetism, mesmerism, chemical action, etc.
Also,  odyl, odyle. 
  • arbitrary name coined by Karl von Reichenbach (1788–1869), German scientist 1840–50

Od  (od),USA pronunciation interj. [Archaic.]
  1. a shortened form of "God'' (used interjectionally and in minced oaths).
Also, 'Od, Odd. 
  • 1590–1600

OD  ),USA pronunciation n., pl.  ODs  or OD's, v.,  OD'd  or ODed  or OD'ed, OD'ing  or OD•ing. 
n. 
  1. Drugs, Militaryan overdose of a drug, esp. a fatal one.
  2. Drugsa person who has taken an overdose of a drug, esp. one who has become seriously ill or has died from such an overdose.

v.i. 
  1. Drugs, Militaryto take an overdose of a drug.
  2. Drugsto die from an an overdose of a drug.
  3. to have or experience an excessive amount or degree of something.
  • 1955–60

OD, 
  1. See  officer of the day. 
  2. Old Dutch.
  3. Ordnance Department.
  4. outside diameter.

od, 
  1. on demand.
  2. outside diameter.
  3. outside dimensions.
  4. overdraft.
  5. overdrawn.

OD., 
  • Old Dutch.

  • O.D., 
    1. Doctor of Optometry.
    2. Drugs(in prescriptions) the right eye.
      • Latin oculus dexter
    3. MilitarySee  officer of the day. 
    4. Old Dutch.
    5. (of a military uniform) olive drab.
    6. Naval Termsordinary seaman.
    7. outside diameter.
    8. overdraft.
    9. overdrawn.

    o.d., 
    1. Drugs(in prescriptions) the right eye.
      • Latin oculus dexter
    2. Militaryolive drab.
    3. on demand.
    4. outside diameter.


    Collins Concise English Dictionary © HarperCollins Publishers::

    OD /ˌəʊˈdiː/ informal n
    1. an overdose of a drug
    vb (OD's, OD'ing, OD'd)
    1. (intransitive) to take an overdose of a drug
    Etymology: 20th Century: from o(ver)d(ose)
    OD abbreviation for
    1. Officer of the Day
    2. ordnance datum
    3. outside diameter
    4. Also: o.d. olive drab
    5. Also: O/D on demand
    6. overdrawn



    od /ɒd; əʊd/, odyl, odyle /ˈɒdɪl/ n
    1. archaic a hypothetical force formerly thought to be responsible for many natural phenomena, such as magnetism, light, and hypnotism
    Etymology: 19th Century: coined arbitrarily by Baron Karl von Reichenbach (1788–1869), German scientist

    ˈodic adj



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