The state or property of being notional. / A notional or groundless opinion.

A fake company used as a front in espionage.

Of, containing, or being a notion; mental or imaginary. / Speculative, theoretical, not the result of research. / (linguistics) Having descriptive value as opposed to a syntactic category.

Mental apprehension of whatever may be known, thought, or imagined; idea, concept. / A sentiment; an opinion. / (obsolete) Sense; mind. / (colloquial) An invention; an ingenious device; a knickknack.

plural of notion

In a notional, imaginary or speculative sense; in theory.

plural of notional

Quality of being notional.

plural of notionality

notional