Definition of inverse
(Entry 1 of 2)
1
: opposite in order, nature, or effect
2
: being an inverse function
inverse sine
inverse
nounDefinition of inverse (Entry 2 of 2)
2
: a proposition or theorem formed by contradicting both the subject and predicate or both the hypothesis and conclusion of a given proposition or theorem
the inverse of "if A then B" is "if notA then notB"
— compare contrapositive
3a
: inverse function
also
: an operation (such as subtraction) that undoes the effect of another operation
b
: a set element that is related to another element in such a way that the result of applying a given binary operation to them is an identity element of the set
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MerriamWebster unabridged
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Time Traveler for inverse
The first known use of inverse was in the 15th century
See more words from the same century