no·tion·al /ˈnoʃnəl, ʃənḷ/
 (a.)概念的,想象的
 No·tion·al a.
 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.
 ◄ ►
 notional
      adj 1: having descriptive value as distinguished from syntactic
             category; "sex is a notional category; gender is a
             syntactic one"
      2: not based on fact; dubious; "the falsehood about some
         fanciful secret treaties"- F.D.Roosevelt; "a small child's
         imaginary friends"; "her imagined fame"; "to create a
         notional world for oneself" [syn: fanciful, imaginary,
          imagined]
      3: not based on fact or investigation; "a notional figure of
         cost helps in determining production costs"; "speculative
         knowledge" [syn: speculative]
      4: indulging in or influenced by fancy; "a fanciful mind"; "all
         the notional vagaries of childhood" [syn: fanciful]
      5: being (or being of the nature of) a notion or concept; "a
         plan abstract and conceptional"; "to improve notional
         comprehension"; "a notional response to the question"
         [syn: conceptional, ideational]