irrational
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irrational
- /ɪˈɹæʃ.(ə.)nəl/
Rhymes with -æʃənəl
Where it comes from
From Latin irratiōnālis, from ir- + ratiōnālis.
adjective more irrational · most irrational
- Not rational; unfounded, nonsensical or wrong-headed. an irrational decision
- Of a real number, that cannot be written as the ratio of two integers. The number π is irrational.
noun irrationals
- A real number that can not be expressed as the quotient of two integers, an irrational number. The square root of 2, which was the first irrational to be discovered, was known to the early Pythagoreans, and ingenious methods of approximating to its value were discovered.
