Irrational Definition

ĭ-răshə-nəl
adjective
Lacking the power to reason.
Webster's New World
Affected by loss of usual or normal mental clarity; incoherent, as from shock.
American Heritage Medicine
Contrary to reason or rationality; senseless; unreasonable; absurd.
Webster's New World
Being a syllable in Greek and Latin prosody whose length does not fit the metric pattern.
American Heritage
Designating a real number not expressible as an integer or as a quotient of two integers: √3 and pi are irrational numbers.
Webster's New World
noun
An irrational number.
American Heritage
A real number that can not be expressed as the quotient of two integers, an irrational number.
Wiktionary
other

(mathematics): transcendental.

Wiktionary

Other Word Forms of Irrational

Noun

Singular:
irrational
Plural:
irrationals

Origin of Irrational

  • From Latin irratiōnālis, from ir- + ratiōnālis.

    From Wiktionary

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