Reciprocal

• 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

See also

• Reciprocity
• Reciprocation