reciprocal

//rɪˈsɪprəkəl//
C1Frequency Level 11Formal
Visual representation of reciprocal

Adjective

reciprocalCanonical form
1

Given, felt, or done in return; mutual.

The two countries have a reciprocal agreement on trade.

2

Inversely related or corresponding; complementary.

The two variables have a reciprocal relationship: when one increases, the other decreases.

Noun

reciprocalSingular
reciprocalsPlural
1

A mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

The reciprocal of 4 is 1/4.

2

Something that is reciprocal to something else.

Trust and respect are reciprocals of each other in a healthy relationship.