The Harappan language, also known as the Indus language, is the unknown language or languages of the Bronze Age (c. 3300 to 1300 BC) Harappan civilization (Indus Valley civilization, or IVC). The Harappan script is yet undeciphered, indeed it has not even been demonstrated to be a writing system, and therefore the language remains unknown. The language being yet unattested in readable contemporary sources, hypotheses regarding its nature are based on possible loanwords, the substratum in Vedic Sanskrit, and some terms recorded in Sumerian cuneiform (such as Meluhha), in conjunction with analyses of the Harappan script.
There are some possible loanwords from the language of the Indus Valley civilization. Meluḫḫa or Melukhkha (Sumerian: 𒈨𒈛𒄩𒆠 Me-luḫ-ḫa) is the Sumerian name of a prominent trading partner of Sumer during the Middle Bronze Age. Its identification remains an open question, but most scholars associate it with the Indus Valley Civilisation. Asko Parpola identifies Proto-Dravidians with the Harappan Culture and the Meluhhan people mentioned in Sumerian records. In his book Deciphering the Indus Script, Parpola states that the Brahui people of Pakistan are remnants of the Harappan culture. According to him, the word "Meluhha" derives from the Dravidian words mel ("elevated") and akam ("place"). Parpola also relates Meluhha with Balochistan, which he calls the "Proto-Dravidian homeland". He also relates Meluhha with the transient word Mleccha, a Vedic word used to mean "barbarian" and used by the incoming Aryan speaking population for the native Harappan population.
