Indosphere
Indosphere is a term used for areas of Indian linguistic influence in the neighboring Southern Asian, Southeast Asian, and East Asian regions. It is commonly used in areal linguistics in contrast with the Sinophone languages of the Mainland Southeast Asia linguistic area of the Sinosphere.
Notably, unlike terms such as Anglosphere, Hispanosphere or Francosphere that refer to the multinational spread and influence of a single language with multiple dialects (English, Spanish and French respectively from the example), Indosphere refers to the influence of all the native languages of the Indian subcontinent, which includes Indo-Aryan and Dravidian languages.