Clausula

Clausula is a Latin-derived term meaning a small closing or clause. In modern usage, it appears in several fields to denote a component of a larger whole, notably in law, linguistics, and music history.

In Romance-language legal and contractual contexts, the word appears as cláusula (with a diacritic in Spanish and Portuguese) and denotes a clause or provision within a contract, treaty, or statute. In English-language practice, the everyday term is clause, but the Latin or Romance forms show up in formal or historical texts and discussions of law and diplomacy.

In linguistics and grammar, clausula can refer to a clause as a syntactic unit. In Latin grammar, the term can indicate a clause or a subordinate clause, and in broader descriptions it is used to discuss the structure of sentences and their components in a way that parallels the English term “clause.”

In music history, clausula (plural clausulae) designates a short, self-contained polyphonic phrase that cadences, often used to replace longer melodic sections in organum. This concept is associated with medieval polyphony of the 12th and 13th centuries, particularly in the Notre Dame school, and is distinguished from more extended organum lines or later rhythmic-melodic developments.

The term is specialized and most commonly encountered in discussions of law, linguistics, or medieval music theory.