1. A single, distinct item in a database, list, or collection that appears only once and is different from all others
Each unique entry in the database represents a different customer.
Cada entrada única no banco de dados representa um cliente diferente.
2. A dictionary or lexical item that appears as a single headword without variants
This is a unique entry that doesn't have any cross-references.
Esta é uma entrada única que não possui referências cruzadas.