1. \ ər, ˈȯr How to pronounce or (audio) , Southern also ˈär \

    Definition of or

     (Entry 1 of 8)

    1 used as a function word to indicate an alternativecoffee or teasink or swim , the equivalent or substitutive character of two words or phraseslessen or abate , or approximation or uncertaintyin 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

    Definition of or (Entry 2 of 8)

    archaic

    Definition of or (Entry 3 of 8)

    archaic
    \ ˈȯr How to pronounce or (audio) \

    Definition of or (Entry 4 of 8)

    : the heraldic color gold or yellow
    \ ˈȯr How to pronounce OR (audio) \

    Definition of OR (Entry 5 of 8)

    : a logical operator that requires at least one 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

    Definition of OR (Entry 6 of 8)

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

    Definition of -or (Entry 7 of 8)

    : one that does a (specified) thing grantor

    Definition of -or (Entry 8 of 8)

    : condition : activity demeanor

    First Known Use of or

    Conjunction (1)

    13th century, in the meaning defined at sense 1

    Preposition

    13th century, in the meaning defined above

    Conjunction (2)

    13th century, in the meaning defined above

    Noun (1)

    15th century, in the meaning defined above

    Noun (2)

    1947, in the meaning defined above

    History and Etymology for or

    Conjunction (1) and Noun (2)

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

    Preposition

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

    Noun (1)

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

    Noun suffix (1)

    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

    Noun suffix (2)

    Middle English, from Anglo-French, from Latin

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    Time Traveler for or

    Time Traveler

    The first known use of or was in the 13th century

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    Statistics for or

    Cite this Entry

    “Or.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/or. Accessed 7 Jul. 2020.

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    More Definitions for or

    \ ər How to pronounce or (audio) , ˈȯr \

    Kids Definition of or

    used between words or phrases that are choicesjuice or milkWill you leave or stay?

    Kids Definition of OR

    Oregon
    \ ər \

    Kids Definition of -or

     (Entry 1 of 4)

    : someone or something that does a specified thing actor elevator

    Kids Definition of -or (Entry 2 of 4)

    : condition : activity demeanor

    Medical Definition of OR

    operating room

    Legal Definition of OR

    own recognizance

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    More from Merriam-Webster on or

    Rhyming Dictionary: 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

    Comments on or

    What made you want to look up or? Please tell us where you read or heard it (including the quote, if possible).

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    Merriam-Webster unabridged
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