notional

Of, containing, or being a notion; mental or imaginary.

Near-synonyms: conceptual, fancied, fanciful, ideal

The idea that a rooster says cock-a-doodle-doo rather than ooh ooh-ooh ooh-ooh is socially conventional even though its sound correspondence is at heart notional.

Speculative, theoretical, not the result of research.

This paper proposes a notional Federated Identity Management (FIM) architecture.

Stubborn.

Having descriptive value as opposed to a syntactic category.

Used to indicate an estimate or a reference amount

Gold traded at $909.00 an ounce, up 0.2 percent from New York's notional close of $906.65 on Wednesday.

Under the agreements, Harvard paid the banks fixed interest rates on a total notional amount of $3.52 billion in exchange for floating-rate payments from them.

A fake company used as a front in espionage.

Numerous CIA notionals, created to counter Communist organizations in Western Europe during the Cold War years, remain active and unrevealed.