Sabittir

Sabittir is a Turkish predicative form meaning “is fixed” or “is constant.” It derives from the adjective sabit, meaning fixed or constant, and the assertive copula suffix -tir, forming the third-person singular present indicative of the verb sabit olmak (to be fixed/to be constant). The word sabit itself traces to the Arabic root thabit (ثابت), meaning firm or established, filtered into Turkish through historical contact. In Turkish grammar, sabittir is used to assert a state about a subject in formal or technical contexts.

In mathematical, scientific, and technical writing, sabittir is commonly employed to declare that a value does not change or remains invariant. For example, a textbook might state “k sabittir” to indicate that k is a constant across a given analysis, or “v sabittir” to denote a fixed velocity in a specific model. The construction emphasizes a factual, universal characteristic rather than a temporary condition.

Usage and style: sabittir tends to appear in formal, didactic, or proof-based prose rather than casual conversation. It aligns with other predicative forms that present general statements as objective truths, often within equations, propositions, or explanations. The form is productive in Turkish, and related expressions include sabit olmak (to be fixed) and sabitlemek (to fix) for related actions.

See also: sabit, sabitlemek, sabit hız, sabit değer.