Noun
universe of discourse (plural universes of discourse)
(logic) The set of all entities over which quantifiers—including "for all" and "there exists"—range.
Furthermore, this universe of discourse is in the strictest sense the ultimate subject of the discourse. Source: Internet
By domain is meant the universe of discourse of a model for the semantic theory of a logic. Source: Internet
The object most accurately is the universe of discourse to which the partial or special object belongs. Source: Internet