notional

adj 1: (grammar) 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 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}]

rational

[Mathematics] a fractional number n/d, where n and d are

integers, n is the numerator and d is the denominator. The

set of all rational numbers is usually called Q.

Computers do not usually deal with rational numbers but

instead convert them to {real} numbers which are represented

(approximately in some cases) as {floating-point} numbers.

Compare {irrational}.