rationals

Capable of reasoning.

Logically sound; not self-contradictory or otherwise absurd.

(of a person or personal characteristics) Healthy or balanced intellectually; exhibiting reasonableness.

(arithmetic) Of a number, capable of being expressed as the ratio of two integers.

(mathematics, not comparable) Comprising, or expressible as, a ratio

(algebra) Of an algebraic expression in indeterminates, or more generally a function: capable of being expressed as the ratio of two polynomials.

(algebraic geometry) Of a variety: (informally) geometrically simple almost everywhere; (formally) birationally equivalent to projective space

(algebraic geometry) Of a function between varieties: acting as a morphism on an open subset of its domain.

(algebraic geometry) Of a point on an algebraic variety over a field: whose coordinates belong to the field in question (in contrast to those points of the variety which are only defined over the algebraic closure of the base field).

(chemistry, obsolete) synonymous replacement for "condensed" in condensed formula.

(mathematics) A rational number: a number that can be expressed as the quotient of two integers.

(historical) The breastplate worn by Israelite high priests.