​involving two people or groups who agree to help each other or behave in the same way to each other. The two colleges have a reciprocal arrangement whereby ...

involving two people or groups who agree to help each other or behave in the same way to each other The two colleges have a reciprocal agreement whereby ...

a verb that expresses the idea of an action that is done by two or more people or things to each other, for example 'kiss' in the sentence 'Paul and Claire ...

There are 22 meanings listed in OED's entry for the word reciprocal, two of which are labelled obsolete. See 'Meaning & use' for definitions, usage, and ...

a situation in which two people, countries, etc. provide the same help or advantages to each other

​in a way that involves two people or groups helping each other or behaving in the same way to each other. a reciprocally beneficial alliance where both ...

1[transitive, intransitive] to behave or feel toward someone in the same way as they behave or feel toward you reciprocate something (with something) Her ...

​[transitive, intransitive] to behave or feel towards somebody in the same way as they behave or feel towards you. reciprocate something Her passion for him ...

The multiplicative inverse of a quantity may, when the operation of multiplication is commutative, be called its reciprocal.

The earliest known use of the noun reciprocal hybrid is in the 1880s. OED's earliest evidence for reciprocal hybrid is from 1882, in a translation by Sydney ...