rel

Rel is a term that appears in multiple domains as an abbreviation, symbol, or proper name, rather than as a single defined subject. In linguistics and grammar, rel. or Rel is used to indicate a relative clause, a clause that modifies a noun and is linked to its antecedent through a relative pronoun or phrase. The notation helps describe the structure of sentences and their grammatical relationships.

In mathematics, logic, and computer science, Rel is commonly used as shorthand for relation. A relation is a set of ordered pairs that expresses a connection between elements. In formal notation, Rel may label a relation symbol or denote the concept of relatedness in proofs, algorithms, and data structures. In relational databases and query languages, the term relation is fundamental; a relation corresponds to a table of rows and columns, and Rel-like notation may appear in theoretical descriptions or program code.

In computing and information technology, Rel can be shorthand for relative, as in relative paths or distances, and it may appear in configuration notes, documentation, and source code to express proportional or positional relationships.

In culture and media, Rel can function as a personal name or nickname for individuals, or as an acronym in organizational titles and project names. The precise meaning of Rel is typically determined by the surrounding context.