Late 16th century; earliest use found in R. B. (d. 1561). From post-classical Latin non esse non-being, non-existence from classical Latin nōn not + esse.
Definition of non esse in US English:
non esse
noun
Metaphysics rare
Non-being, non-existence.
Origin
Late 16th century; earliest use found in R. B. (d. 1561). From post-classical Latin non esse non-being, non-existence from classical Latin nōn not + esse.