Ēns, n.

n. [Lat. ens, a thing, originally p. pr. of esse, to be.]

1. (Philos.) Entity, being, or existence; an actually existing being; also, God, as the Being of Beings. [Obs.]
2. (Chem.) Something supposed to condense within itself all the virtues and qualities of a substance from which it is extracted; essence. [Obs.]