Definition
The notion of definition or defining characteristics (Skt. lakṣaṇa; Wyl. mtshan nyid) is a very important one in Buddhist philosophy, so much so that the sutra vehicle is often known as the vehicle of characteristics.
In Pramana, definition (mtshan nyid) is usually discussed in terms of the triad of definition (mtshan nyid), name (lakṣya; mtshon bya) and basis of definition (mtshan gzhi).