Definify.com
Webster 1913 Edition
Ens
‖
1.
(Metaph.)
Entity, being, or existence; an actually existing being; also, God, as the Being of Beings.
2.
(Chem.)
Something supposed to condense within itself all the virtues and qualities of a substance from which it is extracted; essence.
[Obs.]
Webster 1828 Edition
Ens
ENS
,Noun.
Entity; being; existence. Among the old chimists, the power, virtue or efficacy, which certain substances exert on our bodies; or the things which are supposed to contain all the qualities or virtues of the ingredients they are drawn from, in little room. [little used.]