Inverse /(?)/

In·verse

Inverse

a.
  1. Opposite in order, relation, or effect; reversed; inverted; reciprocal; -- opposed to direct.
  2. Inverted; having a position or mode of attachment the reverse of that which is usual. (Bot.)
  3. Opposite in nature and effect; -- said with reference to any two operations, which, when both are performed in succession upon any quantity, reproduce that quantity; as, multiplication is the inverse operation to division. The symbol of an inverse operation is the symbol of the direct operation with -1 as an index. Thus sin-1 x means the arc or angle whose sine is x. (Math.)

Phrases & Compounds
Inverse figures
two figures, such that each point of either figure is inverse to a corresponding point in the order figure.
Inverse points
two points lying on a line drawn from the center of a fixed circle or sphere, and so related that the product of their distances from the center of the circle or sphere is equal to the square of the radius.
Inverse ratio
the ratio of the reciprocals of two quantities.
Inverse proportion
an equality between a direct ratio and a reciprocal ratio; thus, 4 : 2 : : , or 4 : 2 : : 3 : 6, inversely.

Inverse

n.
  1. That which is inverse.
    Thus the course of human study is the inverse of the course of things in nature.