köprüdür

Köprüdür is a Turkish predicative form that means “it is a bridge.” It is created by taking the noun köprü (bridge) and adding the copular suffix -dür, which marks the third person singular present tense form of the copula in Turkish. The choice of -dür follows Turkish vowel harmony, and in this case the suffix appears as -dür after the stem vowel ü.

In usage, köprüdür identifies or classifies a subject as a bridge. For example, in a sentence such as Bu yapı köprüdür, the speaker asserts that the object is a bridge. This form is part of a broader system of predicative endings in Turkish, which attach to nouns to express identity, definition, or classification without requiring an explicit verb like olmak (to be).

Turkish also has related copula forms for other persons and tenses, such as -dır/-dir/-dur/-dür for the third person singular in different contexts, and person-marked forms like köprüyüm (I am a bridge) or köprüsün (you are a bridge), which illustrate how the copula combines with nouns and pronouns in Turkish grammar.

Köprüdür therefore serves as an example of how Turkish expresses existence or definition through predicative suffixes, highlighting the language’s agglutinative structure and its use of vowel harmony in forming copular endings.