definido

Definido is a feminine or masculine adjective in Spanish and Portuguese that means definite or defined. It comes from the Latin definitus, the past participle of definire, and describes boundaries, characteristics, or terms that are fixed, clear, or specified. In everyday usage, definido often appears in phrases indicating that something has been determined or is known to both speaker and listener.

In linguistics and grammar, definido is used to describe definiteness, a linguistic category that marks referential certainty. In Spanish and Portuguese, determiners such as definite articles and demonstratives signal that a noun phrase refers to a specific entity. For example, el libro (the book) or o livro (the book) point to a known book, whereas un libro or um livro would be indefinite. The term also appears in discussions of defined noun phrases or fixed expressions where the referent is uniquely identifiable.

In mathematics and logic, definido denotes that a value, function, or set is well specified or has a unique interpretation. A defined function assigns exactly one output to every valid input, and a conjunto definido or conjunto definido by a property is one whose members are precisely those that satisfy a given condition. In computing and philosophy, definido continues to describe terms, rules, or values that are fixed or explicitly stated.

Etymologically, definido reflects the broader concept of definition and limit, emphasizing clarity, determination, and specificity. Across Romance languages, the related terms convey similar notions of definiteness and precision, even though exact grammatical usage varies by language.