استان

In a sentence

• من در استان تهران زندگی می‌کنم.

  I live in the province of Tehran.

  The word 'استان' (province) is used here to indicate a political or administrative division of a country.

• این کتاب تاریخچهٔ استان‌های ایران را توضیح می‌دهد.

  This book explains the history of Iran's provinces.

  In this usage, 'استان' (provinces) refers to multiple administrative regions within Iran.

• استان جدیدی به کشور اضافه شد.

  A new province was added to the country.

  Here, 'استان' (province) indicates the creation or establishment of a new administrative region.