In specific contexts, it refers to a huge number equivalent to ten to the power of 58.

See “mystery.”

A term that refers not only to something that cannot be imagined or conceived, generally speaking, but also to something of inconceivably great quantity or quality.

Lit. “unthinkability,” (on the part of a mind whose thinking is conditioned and bound by conceptual terms). This is essentially synonymous with “incomprehensibility” (see entry).

Derived from a verb that means “to think,” this term can be used as a noun or an adjective to describe something that cannot be conceived or understood. In that sense, the term overlaps with the sense of the English word mystery. The term is often found in this sūtra in close association with the term guhya (“secret”), and also used as an adjective in combination with dharma (“thing” or “quality”). Rendered that way, it can also be used in the sense of an inconceivably large number of things.