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and/or

conjunction
\ ˈand-ˈȯr How to pronounce and/or (audio) \

Definition of and/or

—used as a function word to indicate that two words or expressions are to be taken together or individually language comprehension and/or production— David Crystal

First Known Use of and/or

1853, in the meaning defined above

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The first known use of and/or was in 1853

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inexorable

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