What is Relation?

Relation definition and meaning on Dictionary terms:
an existing connection; a significant association between or among things: the relation between cause and effect.
relations, the various connections between peoples, countries, etc.: foreign relations. the various connections in which persons are brought together: business and social relations. sexual intercourse.

the mode or kind of connection between one person and another, between an individual and God, etc.
connection between persons by blood or marriage.
a person who is related by blood or marriage; relative: his wife’s relations.
the act of relating, narrating, or telling; narration.

Law. a principle whereby effect is given to an act done at one time as if it had been done at a previous time.
Mathematics. a property that associates two quantities in a definite order, as equality or inequality. a single- or multiple-valued function.