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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
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Origin and Etymology of or
Middle English, alteration of other, alteration of Old English oththe; akin to Old High German eddo or
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
First Known Use of or
13th century
Origin and Etymology of or
Middle English, from Anglo-French, gold, from Latin aurum — more at aureus
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
1or
OR
Definition of OR
1 operating room
2 operational research; operations research
3 Oregon
4 owner's risk
5 own recognizance
-or
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
-or
Definition of -or
: condition : activity demeanor
Origin and Etymology of -or
Middle English, from Anglo-French, from Latin
OR Defined for Kids
or
playDefinition of or for Students
—used between words or phrases that are choices juice or milk Will you leave or stay?
-or
Definition of -or for Students
: someone or something that does a specified thing actor elevator
-or
Definition of -or for Students
: condition : activity demeanor
Medical Dictionary
OR
Medical Definition of OR
operating room
Law Dictionary
OR
Legal Definition of OR
own recognizance
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See words that rhyme with or Spanish Central: Translation of or Nglish: Translation of or for Spanish speakers Britannica English: Translation of or for Arabic speakers Britannica.com: Encyclopedia article about or
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