Hindus (Hindustani: [ˈɦɪndu] ; /ˈhɪnduːz/; also known as Sanātanīs) are people who religiously adhere to Hinduism, also known by its endonym Sanātana Dharma. Historically, the term has also been used as a geographical, cultural, and later religious identifier for people living in the Indian subcontinent.
It is assumed that the term "Hindu" traces back to Avestan scripture Vendidad which refers to land of seven rivers as Hapta Hendu which itself is a cognate to Sanskrit term Sapta Sindhuḥ. (The term Sapta Sindhuḥ is mentioned in Rig Veda and refers to a North western Indian region of seven rivers and to India as a whole.) The Greek cognates of the same terms are "Indus" (for the river) and "India" (for the land of the river). Likewise the Hebrew cognate hōd-dū refers to India mentioned in Hebrew Bible (Esther 1:1). The term "Hindu" also implied a geographic, ethnic or cultural identifier for people living in the Indian subcontinent around or beyond the Sindhu (Indus) River. By the 16th century CE, the term began to refer to residents of the subcontinent who were not Turkic or Muslims.