·adj Mutually interchangeable.
II. Reciprocal ·adj Recurring in vicissitude; alternate.
III. Reciprocal ·noun That which is reciprocal to another thing.
IV. Reciprocal ·adj Reflexive;
— applied to pronouns and verbs, but sometimes limited to such pronouns as express mutual action.
V. Reciprocal ·adj Done by each to the other; interchanging or interchanged; given and received; due from each to each; mutual; as, reciprocal love; reciprocal duties.
VI. Reciprocal ·adj Used to denote different kinds of mutual relation; often with reference to the substitution of reciprocals for given quantities. ·see the Phrases below.
VII. Reciprocal ·noun The quotient arising from dividing unity by any quantity; thus, / is the reciprocal of 4; 1/(a + b) is the reciprocal of a + b. The reciprocal of a fraction is the fraction inverted, or the denominator divided by the numerator.