(semantics) A term that, together with another term, forms a pair of opposite role names in a relationship, such as parent and child.

public relations (in attributive use)

(linguistics) Any of various possible semantic relations between a verb and its arguments.

(mathematics) an equation that recursively defines a sequence; each term of the sequence is defined as a function of the preceding terms.

plural of blood relation

plural of equivalence relation

Something seen as inferior.

plural of relational model

(databases) A database model that is based on first-order predicate logic.

The study of relationships among countries, commonly abbreviated as IR. / The relationships themselves