Definition of plus or minus
(Entry 1 of 2)
: indicating a quantity whose algebraically positive and negative values serve to bracket a range of values either alone or when added to and subtracted from a given number
measured with an accuracy of plus or minus 3 feet
plus or minus
adverbDefinition of plus or minus (Entry 2 of 2)
: more or less, approximately
a dance for singles plus or minus age 30
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Merriam-Webster unabridged
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Time Traveler for plus or minus
The first known use of plus or minus was in 1849
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