inverse

Short definition from Wiktionary

Adjective

1. 1
   Opposite in effect, nature or order.
2. 2
   Reverse, opposite in order.
3. 3
   Inverted; having a position or mode of attachment the reverse of that which is usual.
4. 4
   Having the properties of an inverse; said with reference to any two operations, which, when both are performed in succession upon any quantity, reproduce that quantity.
5. 5
   That has the property of being an inverse (the result of a circle inversion of a given point or geometrical figure); that is constructed by circle inversion.
6. 6
   Whose every element has an inverse (morphism which is both a left inverse and a right inverse).

Noun

1. 1
   An inverted state: a state in which something has been turned (properly) upside down or (loosely) inside out or backwards.
2. 2
   The result of an inversion: The reverse of any procedure or process.
3. 3
   The result of an inversion: A ratio etc. in which the antecedents and consequents are switched.
4. 4
   The result of an inversion: The result of a circle inversion; the set of all such points; the curve described by such a set.
5. 5
   The result of an inversion: The non-truth-preserving proposition constructed by negating both the premise and conclusion of an initially given proposition.
6. 6
   A second element which negates a first; in a binary operation, the element for which the binary operation—when applied to both it and an initially given element—yields the operation's identity element, specifically: The negative of a given number.
7. 7
   A second element which negates a first; in a binary operation, the element for which the binary operation—when applied to both it and an initially given element—yields the operation's identity element, specifically: One divided by a given number.
8. 8
   A second element which negates a first; in a binary operation, the element for which the binary operation—when applied to both it and an initially given element—yields the operation's identity element, specifically: A second function which, when combined with the initially given function, yields as its output any term inputted into the first function.
9. 9
   A morphism which is both a left inverse and a right inverse.
10. 10
    The winning of the coup in a game of rouge et noir by a card of a color different from that first dealt; the area of the table reserved for bets upon such an outcome.
11. 11
    A grammatical number marking that indicates the opposite grammatical number (or numbers) of the default number specification of noun class.

Verb

1. 1
   To compute the bearing and distance between two points.