1

or

play
conjunction \ ər , ˈȯr , Southern also ˈär \

Definition of or

1 used as a function word to indicate an alternative
  • coffee or tea
  • sink or swim
, the equivalent or substitutive character of two words or phrases
  • lessen or abate
, or approximation or uncertainty
  • in five or six days
2 archaic :either
3 archaic :whether
4 used in logic as a sentential connective that forms a complex sentence which is true when at least one of its constituent sentences is true — compare disjunction

Origin and Etymology of or

Middle English, alteration of other, alteration of Old English oththe; akin to Old High German eddo or


2

or

preposition

Definition of or

archaic

Origin and Etymology of or

Middle English, from or, adverb, early, before, from Old Norse ār; akin to Old English ǣr early — more at ere


3

or

conjunction

Definition of or

archaic

First Known Use of or

13th century


4

or

play
noun \ ˈȯr \

Definition of or

:the heraldic color gold or yellow

Origin and Etymology of or

Middle English, from Anglo-French, gold, from Latin aurum — more at aureus


1

OR

play
noun \ ˈȯr \

Definition of OR

:a logical operator that requires either of two inputs to be present or conditions to be met for an output to be made or a statement to be executed
  • OR gate in a computer

Origin and Etymology of or

Other Computer-Related Terms


2

OR

abbreviation

Definition of OR

1 operating room
2 operational research; operations research
3 Oregon
4 owner's risk
5 own recognizance

1

-or

noun suffix

Definition of -or

:one that does a (specified) thing
  • grantor

Origin and Etymology of -or

Middle English, from Anglo-French -ur, -our, -eour & Latin -or; Anglo-French -ur, -our, from Latin -or; Anglo-French -eour, from Latin -ator, from -a-, verb stem + -tor, agent suffix; akin to Greek -tōr, agent suffix, Sanskrit -tā


2

-or

noun suffix

Definition of -or

:condition :activity
  • demeanor

Origin and Etymology of -or

Middle English, from Anglo-French, from Latin


OR Defined for Kids

or

play
conjunction \ ər , ˈȯr \

Definition of or for Students

used between words or phrases that are choices
  • juice or milk
  • Will you leave or stay?

OR

abbreviation

Definition of OR for Students

Oregon

1

-or

noun suffix \ ər \

Definition of -or for Students

:someone or something that does a specified thing
  • actor
  • elevator

2

-or

noun suffix

Definition of -or for Students

:condition :activity
  • demeanor

Medical Dictionary

OR

abbreviation

medical Definition of OR

operating room

Law Dictionary

OR

abbreviation

legal Definition of OR

own recognizance


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