Dictionary Definition :
Definition[1]
:
Tisya. (1) The twenty-third of the twenty-eight constellations 鬼宿 γδηθ in Cancer; it has connection with Śiva. (2) Name of a Buddha who taught Śākyamuni and Maitreya in a former incarnation.
Source
:
A Dictionary of Chinese Buddhist Terms, William Edward Soothill and Lewis Hodous