od

[ od, ohd ]

noun
  1. a hypothetical force formerly held to pervade all nature and to manifest itself in magnetism, mesmerism, chemical action, etc.

Origin of od

1
First recorded in 1840–50; arbitrary name coined by Karl von Reichenbach (1788–1869), German scientist

Other definitions for od (2 of 9)

od

abbreviation
  1. on demand.

  2. outside diameter.

  1. outside dimensions.

Other definitions for Od (3 of 9)

Od

or 'Od, Odd

[ od ]

interjectionArchaic.
  1. a shortened form of “God” (used in euphemistically altered oaths).

Origin of Od

3
First recorded in 1590–1600

Other definitions for OD (4 of 9)

OD
[ oh-dee ]

noun,plural ODs or OD's.
  1. an overdose of a drug, especially a fatal one.

  2. 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.
  1. to take an overdose of a drug.

  2. to die from an an overdose of a drug.

  1. to have or experience an excessive amount or degree of something.

Origin of OD

4
First recorded in 1955–60

Other definitions for OD (5 of 9)

OD

abbreviation
  1. Old Dutch. : Also OD., O.D.

  1. Ordnance Department.

  2. outside diameter.

Other definitions for o.d. (6 of 9)

o.d.1

abbreviation
  1. (in prescriptions) the right eye.

Origin of o.d.

6
From Latin oculus dexter

Other definitions for o.d. (7 of 9)

o.d.2

abbreviation
  1. olive drab.

  2. on demand.

  1. outside diameter.

Other definitions for O.D. (8 of 9)

O.D.1

abbreviation
  1. (in prescriptions) the right eye.

Origin of O.D.

8
From Latin oculus dexter

Other definitions for O.D. (9 of 9)

O.D.2

abbreviation
  1. Doctor of Optometry.

  1. Old Dutch.

  2. (of a military uniform) olive drab.

  3. ordinary seaman.

  4. outside diameter.

  5. overdraft.

  6. overdrawn.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use od in a sentence

British Dictionary definitions for od (1 of 4)

od

odyl or odyle (ˈɒdɪl)

/ (ɒd, əʊd) /


noun
  1. archaic a hypothetical force formerly thought to be responsible for many natural phenomena, such as magnetism, light, and hypnotism

Origin of od

1
C19: coined arbitrarily by Baron Karl von Reichenbach (1788–1869), German scientist

Derived forms of od

  • odic, adjective

British Dictionary definitions for Od (2 of 4)

Od

'Od or Odd

/ (ɒd) /


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

British Dictionary definitions for OD (3 of 4)

OD1

/ (ˌəʊˈdiː) informal /


noun
  1. an overdose of a drug

verbOD's, OD'ing or OD'd
  1. (intr) to take an overdose of a drug

Origin of OD

3
C20: from o (ver) d (ose)

British Dictionary definitions for OD (4 of 4)

OD2

abbreviation for
  1. Officer of the Day

  2. Old Dutch

  1. ordnance datum

  2. outside diameter

  3. Also: o.d. military olive drab

  4. Also: O/D banking

    • on demand

    • overdraft

    • overdrawn

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