What is the meaning of Reciprocal?

Of a feeling, action or such: mutual, uniformly felt or done by each party towards the other or others; two-way.

Mutually interchangeable.

Expressing mutual action, applied to pronouns and verbs; also in a broad sense: reflexive.

Used to denote different kinds of mutual relation; often with reference to the substitution of reciprocals for given quantities.

Done, given, felt, or owed in return.

The number obtained by dividing 1 by another given number; the result of exchanging the numerator and the denominator of a fraction.

A construction expressing mutual action.

Source: wiktionary.org