Existence of something established or proven by the fact that when one searches for the referent thing (btags-don), the actual "thing" referred to by a name or concept, corresponding to the names or concepts for something, that referent thing is findable on the side of the object as a focal support. The existence of that referent thing is established by a self-establishing nature.
Tibetan: རང་བཞིན་གྱིས་གྲུབ་པ། rang-bzhin-gyis grub-pa
J. Hopkins: Inherent existence; Inherently established
Synonyms: Existence established by something's self-nature; Inherent existence; Findably established existence