An important ca. eleventh-century Indian tantric master and translator. He is also known as Vajrāsana the younger, and is said to have been the abbot of Vajrāsana Monastery in what is now Bodh Gaya. This Amoghavajra should not be confused with the eighth-century translator of the same name, who is renowned for his Chinese translations of Indian Buddhist esoteric works.

This term in its broadest sense can refer to any being, whether human, animal, or nonhuman. However, it is often used to refer to a specific class of nonhuman beings, especially when bhūtas are mentioned alongside rākṣasas, piśācas, or pretas. In common with these other kinds of nonhumans, bhūtas are usually depicted with unattractive and misshapen bodies. Like several other classes of nonhuman beings, bhūtas take spontaneous birth. As their leader is traditionally regarded to be Rudra-Śiva (also known by the name Bhūta), with whom they haunt dangerous and wild places, bhūtas are especially prominent in Śaivism, where large sections of certain tantras concentrate on them.

Butön Rinchen Drup (bu ston rin chen grub, 1290–1364), a great scholar at the monastery of Zhalu (zha lu) whose compiling of lists of translated works contributed to the emergence of the Kangyur and Tengyur collections.

The term dhāraṇī has the sense of something that “holds” or “retains,” and so it can refer to the special capacity of practitioners to memorize and recall detailed teachings. It can also refer to a verbal expression of the teachings‍—an incantation, spell, or mnemonic formula‍—that distills and “holds” essential points of the Dharma and is used by practitioners to attain mundane and supramundane goals. The same term is also used to denote texts that contain such formulas.

A class of nonhuman being typically associated with violent sorcery rites.

The eleventh century Tibetan translator and adept involved in the translation of the present text and the transmission of Vajrabhairava/Yamāntaka lineages in Tibet.

A formula of words or syllables that are recited aloud or mentally in order to bring about a magical or soteriological effect or result. The term has been interpretively etymologized to mean “that which protects (trā) the mind (man)”.

A class of nonhuman beings who live in subterranean aquatic environments, where they guard wealth and sometimes also teachings. Nāgas are associated with serpents and have a snakelike appearance. In Buddhist art and in written accounts, they are regularly portrayed as half human and half snake, and they are also said to have the ability to change into human form. Some nāgas are Dharma protectors, but they can also bring retribution if they are disturbed. They may likewise fight one another, wage war, and destroy the lands of others by causing lightning, hail, and flooding.

A class of nonhuman beings that are often, but certainly not always, considered demonic in the Buddhist tradition. They are often depicted as flesh-eating monsters who haunt frightening places and are ugly and evil-natured with a yearning for human flesh, and who additionally have miraculous powers, such as being able to change their appearance.

The lord of the gods in the Heaven of the Thirty-Three (trāyastriṃśa). Alternatively known as Indra, the deity that is called “lord of the gods” dwells on the summit of Mount Sumeru and wields the thunderbolt. The Tibetan translation brgya byin (meaning “one hundred sacrifices”) is based on an etymology that śakra is an abbreviation of śata-kratu, one who has performed a hundred sacrifices. Each world with a central Sumeru has a Śakra. Also known by other names such as Kauśika, Devendra, and Śacipati.

A frequently used synonym for buddha. According to different explanations, it can be read as tathā-gata, literally meaning “one who has thus gone,” or as tathā-āgata, “one who has thus come.” Gata, though literally meaning “gone,” is a past passive participle used to describe a state or condition of existence. Tatha­(tā), often rendered as “suchness” or “thusness,” is the quality or condition of things as they really are, which cannot be conveyed in conceptual, dualistic terms. Therefore, this epithet is interpreted in different ways, but in general it implies one who has departed in the wake of the buddhas of the past, or one who has manifested the supreme awakening dependent on the reality that does not abide in the two extremes of existence and quiescence. It is also often used as a specific epithet of the Buddha Śākyamuni.

A class of gods in the desire realm named for Śakra (also known as Indra) and thirty-two other gods, who collectively dwell in what is called the Heaven of the Thirty-Three.

This term generally indicates indestructibility and stability. In the sūtras, vajra most often refers to the hardest possible physical substance, said to have divine origins. In some scriptures, it is also the name of the all-powerful weapon of Indra, which in turn is crafted from vajra material. In the tantras, the vajra is sometimes a scepter-like ritual implement, but the term can also take on other esoteric meanings.

Generally considered a wrathful form of Mañjuśrī.

An epithet for a buddha.

This term may, according to context, refer to exoteric or esoteric knowledge, a goddess, her associated dhāraṇī, or some combination of these.