Mumbai (Marathi: मुंबई, transl: Mumbaī, IPA:/ˈmumbəi/), formerly Bombay, is the capital of the Indian state of Maharashtra and the financial capital of India. With an estimated population of thirteen million, it is the most populous city in India and the second most populous city in the world.World Gazetteer estimate for 2008-01-01 Along with the neighbouring suburbs of Navi Mumbai and Thane, it forms, at nineteen million, the world's fifth most populous metropolitan area. Mumbai lies on the west coast of India and has a deep natural harbour. Mumbai's port handles over half of India's maritime cargo.

Mumbai is the commercial and entertainment centre of India, generating 5% of India's GDP and accounting for 25% of industrial output, 40% of maritime trade, and 70% of capital transactions to India's economy. Mumbai is one of the world's top ten centres of commerce by global financial flow, home to such important financial institutions as the Reserve Bank of India, the Bombay Stock Exchange, the National Stock Exchange of India and the corporate headquarters of many Indian companies and numerous multinational corporations. The city also houses India's Hindi film and television industry, known as Bollywood. Mumbai's business opportunities, as well as its high standard of living, attract migrants from all over India and, in turn, make the city a potpourri of many communities and cultures.

Etymology

The name "Mumbai" is an eponym, etymologically derived from Mumba or Maha-Amba the name of the Hindu goddess Mumbadevi and Aai, "mother" in Marathi. The former name Bombay had its origins in the 16th century when the Portuguese arrived in the area and called it by various names, which finally took the written form Bombaim, still common in current Portuguese use. After the British gained possession in the 17th century, it was anglicised to Bombay, although it was known as Mumbai or Mambai to Marathi and Gujarati-speakers, and as Bambai in Hindi, Urdu. The name was officially changed to its Marathi pronunciation of Mumbai in 1995.

A widespread explanation of the origin of the traditional English name Bombay holds that it was derived from a Portuguese name meaning "good bay". This is based on the fact that bom (masc.) is Portuguese for "good" whereas the English word "bay" is similar to the Portuguese baía (fem., bahia in old spelling). The normal Portuguese rendering of "good bay" would have been boa bahia rather than the grammatically incorrect bom bahia. However, it is possible to find the form baim (masc.) for "little bay" in sixteenth-century Portuguese.