The International Alphabet of Sanskrit Transliteration (I.A.S.T.) is a transliteration scheme that allows a lossless romanization of Indic scripts as employed by the Sanskrit language. It is also used to romanize Pāḷi, Prākṛta and Apabhraṁśa. It is based on the notation used by Monier Monier-Williams in his 1899 dictionary.