it is discussed in nyayavartika 3.2.26 and in editors f.n. thereupon p. 858 in Css 18-19. 1936-44. calcutta.
In the Tattvasaṅgrahapañjika I find the term visarāru. It clearly means
something like "flowing forth continuously," but I do not find it in the lexicons at my
disposal (I'm away from my library just now) and I can't work out the derivation,
except of course that it's from vi-sṛ > visara "going forth".
It's not, by the way, to be found in Edgerton's BHS dictionary, or in Apte, or in Monier-Williams,
which I do have packed into my tablet.
Thanks in advance for your suggestions.
Matthew Kapstein
Directeur d'études,
Ecole Pratique des Hautes Etudes
Numata Visiting Professor of Buddhist Studies,
The University of Chicago