Definition of outlier
1
: a person whose residence and place of business are at a distance
His house was a place of refuge for outliers.
2
: something (such as a geologic feature) that is situated away from or classed differently from a main or related body
The island is an outlier on the southeast side of the archipelago.
3a
: a statistical observation that is markedly different in value from the others of the sample
Values that are outliers give disproportionate weight to larger over smaller values.
b
: a person or thing that is atypical within a particular group, class, or category
She was an outlier when she launched her cruelty-free, sustainably minded brand in 2001, but has found the centre of gravity shifting in her direction.— Jess Cartner-Morley Among the world's wealthy nations, the United States is an outlier on this issue: Americans have the lowest national minimum wage, relative to the median wage, of any of the wealthy nations represented in the Organization for Economic Cooperation and Development.— Christopher Ingraham
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Merriam-Webster unabridged
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Time Traveler for outlier
The first known use of outlier was in 1606
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