Entity \En"ti*ty\, n.; pl. Entities. [LL. entitas, fr. L. ens, entis, thing, prop. p. pr. of esse to be: cf. F. entit['e]. 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.

Source: Webster's Revised Unabridged Dictionary (1913)