Webster's Revised Unabridged Dictionary · 1913

Entity

Entity , noun

[Late Latin entitas, from Latin ens, entis, thing, prop. present participle of esse to be: compare French entité. See Essence, Is.]

A real being, whether in thought (as an ideal conception) or in fact; being; essence; existence.
Self-subsisting entities, such as our own personality. — Shairp
Fortune is no real entity,... but a mere relative signification. — Bentley