Istanbulun

Istanbulun is the Turkish genitive form of the city name İstanbul, used to indicate possession or association. It translates roughly as "of Istanbul" or "Istanbul's." The form is created by adding the genitive suffix -un to İstanbul, with vowel harmony determining the exact variant of the suffix (-ın, -in, -un, -ün). In standard Turkish orthography, the combination is written with an apostrophe as İstanbul'un when attached to another word, for example in İstanbul'un tarihi (the history of Istanbul). The non-apostrophized variant Istanbulun may appear in simplified or historical texts, but the apostrophe is recommended in modern Turkish to avoid confusion.

Usage examples include İstanbul'un tarihi (the history of Istanbul), İstanbul'un nüfusu (the population of Istanbul), and İstanbul'un belediyesi (the municipality of Istanbul). In Turkish grammar, the possessive/genitive construction is used to express possession, attribution, or relationship, with the possessor noun preceding the possessed noun and taking the appropriate suffix.

Geographically and culturally, Istanbulun is not a separate place or entity. Instead, it is a grammatical form that demonstrates how Turkish marks possession and association with proper nouns. It is one of several genitive forms that attach to nouns to create noun phrases describing relationships such as ownership, affiliation, or origin.

See also: İstanbul, Turkish grammar, Genitive case in Turkish, Possessive construction in Turkish.