sūtra

In Sanskrit literally “a thread,” this is an ancient term for teachings that were memorized and orally transmitted in an essential form. Therefore, it can also mean “pithy statements,” “rules,” and “aphorisms.” In Buddhism it refers to the Buddha’s teachings, whatever their length. It is one of the three divisions of the Buddha’s teachings, the other two being Vinaya and Abhidharma. It is also used in contrast with the tantra teachings, though a number of important tantras have sūtra in their title. It is also classified as one of the nine or twelve aspects of the Dharma, in which context sūtra means “a teaching given in prose.”