relativo

adjective
  1. Relating to or dependent on something else; not absolute. adjective
    The concept of beauty is often considered to be relativo, as it can vary greatly between cultures.
    His success is relativo, depending on how you define achievement.
  2. In grammar, a term used to describe a pronoun that introduces a relative clause, referring to a noun mentioned previously. adjective
    In the sentence 'The book that you lent me was fascinating,' 'that' is a relativo pronoun.
    Relativo pronouns like 'who' and 'which' are essential for connecting clauses.