What is "inbeing"

Inbeing \In"be`ing\, n. Inherence; inherent existence.
--I. Watts.

n. 1 The fact or state of being in; existence in something else. 2 inherence; inherent existence; indwelling; immanence. 3 Inward or essential nature; that which a thing is in itself. 4 (context obsolete applied to the persons of the Trinity English) An indwelling being.