RATIONAL

Pronunciation (US):

• RATIONAL (noun)
  The noun RATIONAL has 1 sense:

1. an integer or a fraction

  Familiarity information: RATIONAL used as a noun is very rare.

• RATIONAL (adjective)
  The adjective RATIONAL has 4 senses:

1. consistent with or based on or using reason
2. of or associated with or requiring the use of the mind
3. capable of being expressed as a quotient of integers
4. having its source in or being guided by the intellect (distinguished from experience or emotion)

  Familiarity information: RATIONAL used as an adjective is uncommon.

• RATIONAL (noun)

Meaning:

An integer or a fraction

Classified under:

Nouns denoting quantities and units of measure

Synonyms:

rational; rational number

Hypernyms ("rational" is a kind of...):

real; real number (any rational or irrational number)

Hyponyms (each of the following is a kind of "rational"):

fraction (the quotient of two rational numbers)

• RATIONAL (adjective)

Meaning:

Consistent with or based on or using reason

Context examples:

rational behavior / a process of rational inference / rational thought

Similar:

reasonable; sane (marked by sound judgment)

intelligent; reasoning; thinking (endowed with the capacity to reason)

demythologised; demythologized (having mythical elements removed)

coherent; logical; lucid (capable of thinking and expressing yourself in a clear and consistent manner)

Also:

logical (capable of or reflecting the capability for correct and valid reasoning)

reasonable; sensible (showing reason or sound judgment)

sane (mentally healthy; free from mental disorder)

Antonym:

irrational (not consistent with or using reason)

Meaning:

Of or associated with or requiring the use of the mind

Synonyms:

noetic; intellectual; rational

Context examples:

intellectual problems / the triumph of the rational over the animal side of man

Similar:

mental (involving the mind or an intellectual process)

Meaning:

Capable of being expressed as a quotient of integers

Classified under:

Relational adjectives (pertainyms)

Context example:

rational numbers

Domain category:

math; mathematics; maths (a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement)

Antonym:

irrational (real but not expressible as the quotient of two integers)

Pertainym:

ratio (the relative magnitudes of two quantities (usually expressed as a quotient))

Meaning:

Having its source in or being guided by the intellect (distinguished from experience or emotion)

Context example:

a rational analysis

Similar:

intellectual (appealing to or using the intellect)