X factor

noun

Definition of X factor

: a circumstance, quality, or person that has a strong but unpredictable influence

First Known Use of X factor

1930, in the meaning defined above

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Dictionary Entries near X factor

Xerus

Xerxes I

XF

X factor

xg

x-height

Xhosa

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The first known use of X factor was in 1930

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to reflect, repel, echo, or resound

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