Definition - What does Pratishthasara Agama mean?
Pratishthasara Agama is one of the four main divisions of the Vaisnava Agamas, a collection of scriptures in Vaishnavism. In this classical school of Hinduism, Vishnu is considered the supreme deity. From Sanskrit, pratishtha means “steadfast,” “dedication” or “foundation”; sara means “energy” or “essence”; and agama means “tradition” or “arrival.”
In addition to Pratishthasara Agama, the main divisions of the Vaisnava Agamas are Vaikhanasa, Pancharatra and Vijnanalalita, each dealing with a different aspect of Vaishnavism's religious life.
Yogapedia explains Pratishthasara Agama
Having both Vedic and non-Vedic origins, the agamas are collections of scriptures in several of the classical traditions of Hinduism. In addition to the Vaisnava Agamas, the other two main ones are the Shaiva Agamas (Shaivism) and the Shakta Agamas (Shaktism), which are typically called tantras.
The agamas cover all aspects of religious life from specific details about how to build temples and how to hold religious festivals to social rules, as well as information about jnana (spiritual and philosophical knowledge), kriyas (esoteric rituals), charyas (esoteric worship), several types of yoga, mantras, yantras and meditation.