Hindustan is the Persian name for India, broadly the Indian subcontinent, which later became an endonym used in Hindi-Urdu. After the Partition of India, it continues to be used as a historic name for the Republic of India.
A secondary meaning of Hindustan is as a geographic term for the Indo-Gangetic Plain in northern India.

    Etymology

    Hindustan is derived from the Persian word Hindū cognate with the Sanskrit Sindhu.[8] The Proto-Iranian sound change *s > h occurred between 850–600 BCE, according to Asko Parpola.[9] Hence, the Rigvedic sapta sindhava (the land of seven rivers) became hapta hindu in the Avesta. It was said to be the "fifteenth domain" created by Ahura Mazda, apparently a land of 'abnormal heat'.[10] In 515 BCE, Darius I annexed the Indus valley including Sindhu, the present day Sindh, which was called Hindu in Persian.[11] During the time of Xerxes, the term "Hindu" was also applied to the lands to the east of Indus.[8]
    In middle Persian, probably from the first century CE, the suffix -stān was added, indicative of a country or region, forming the present word Hindūstān.[12] Thus, Sindh was referred to as Hindūstān in the Naqsh-e-Rustam inscription of Shapur I in c. 262 CE.
    Historian B. N. Mukherjee states that from the lower Indus basin, the term Hindūstān got gradually extended to "more or less the whole of the subcontinent". The Greco-Roman name "India" and the Chinese name Shen-tu also followed a similar evolution.


    "Hindustan" is often used to refer to the modern day Republic of India. Slogans involving the term are commonly heard at sports events and other public programmes involving teams or entities representing the modern nation state. In marketing, it is also commonly used as an indicator of national origin in advertising campaigns and is present in many company names. Mohammed Ali Jinnah, the founder of Pakistan, and his party the Muslim League, insisted on calling the modern day Republic of India 'Hindustan' in reference to its Hindu majority population.


    In one usage among Hindustani speakers in India, the term 'Hindustani' refers to an Indian, irrespective of religious affiliation. Among non-Hindustani speakers e.g. Bengali-speakers, "Hindustani" is sometimes used to describe persons who are from the upper Ganges, also regardless of religious affiliation, but rather as a geographic term.
    Hindustani is sometimes used as an ethnic term applied to South Asia (e.g., a Mauritian or Surinamese man with roots in South Asia might describe his ethnicity by saying he is Hindustani). For example, Hindoestanen is a Dutch word used to describe people of South Asian origin, in the Netherlands and Suriname.
    Hindustani is also used to refer to the Hindustani language (not to be confused with Hindi, which is a register of Hindustani alongside Urdu, another register of the same language), which derives from the Khariboli dialect under the Delhi Sultanate of present-day Western Uttar Pradesh, Southern Uttarakhand and Delhi areas.

    Historical usages


    Early Persian scholars had limited knowledge of the extent of India. After the advent of Islam and the Muslim conquests, the meaning of Hindustan interacted with its Arabic variant Hind and almost became synonymous with it. The Arabs, engaging in oceanic trade, included all the lands from Tis in western Balochistan (near modern Chabahar) to the Indonesian archipelago, in their idea of Hind, especially when used in its expansive form as "Al-Hind". Hindustan did not acquire this elaborate meaning. It also did not acquire the distinction between Sind (roughly modern Pakistan) and Hind (the lands to the east of it).The 10th century text Hudud al-Alam defined Hindustan as roughly the Indian subcontinent, with its western limit formed by the river Indus, southern limit going up to the Great Sea and the eastern limit at Kamarupa, the present day Assam.[15] For the next ten centuries, both Hind and Hindustan were used within the subcontinent with exactly this meaning, along with their adjectives Hindawiand Hindustani.