Reciprocal
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Reciprocal may refer to:
- Multiplicative inverse, in mathematics, the number 1/x, which multiplied by x gives the product 1, also known as a reciprocal
- Reciprocal (grammar), a relationship between grammatical agents
- Reciprocal altruism, a form of symbiotic relationship in evolutionary biology
- Reciprocal cross, a breeding experiment in genetics
- Reciprocal determinism, a theory in psychology
- Reciprocal lattice, a basis for the dual space of covectors, in crystallography
- Reciprocal polynomial, in mathematics
- Reciprocal rule, a technique in calculus for calculating derivatives of reciprocal functions
- Hybrid (biology), in genetics, the result of reciprocal crossing, also known as a reciprocal hybrid
