Facultative vs Nonfacultative - What's the difference?

As adjectives the difference between facultative and nonfacultative

is that facultative is of or relating to faculty, especially to mental faculty while nonfacultative is not facultative.

(en adjective)

Of or relating to faculty, especially to mental faculty

Not obligate; optional, discretionary or elective

That grants permission or power to do something

(biology) Able to perform a particular life function, or to live generally, in more than one way

(geometry, of a point) At which a given function is positive.

* obligate

* facultatively

* Free Medical Dictionary * Oxford English Dictionary

* ----

(-)

Not facultative.