Notional

From Biology-Online Dictionary | Biology-Online Dictionary

notional

1. Consisting of, or conveying, notions or ideas; expressing abstract conceptions.

2. Existing in idea only; visionary; whimsical. Discourses of speculative and notional things. (Evelyn)

3. Given to foolish or visionary expectations; whimsical; fanciful; as, a notional man.