Definition: name of the Pratisakhya treatise pertaining to the White Yajurveda which is also called the Vajasaneyi-Pratisakhya. This work appears to be a later one as compared with the other PratiSakhya works and bears much similarity with some of the Sutras of Panini. It is divided into eight chapters by the author and it deals with letters, their origin and their classification, the euphonic and other changes when the Samhita text is rendered into the Pada text, and accents. The work appears to be a common work for all the different branches of the White Yajurveda, being probably based on the individually different Pratisakhya works of the different branches of the Shukla Yajurveda composed in ancient times. Katyayana is traditionally believed to be the author of the work and very likely he was the same Katyayana who wrote the Varttikas on the Sutras of Panini.