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irrational irrational number

Main Entry: ir·ra·tio·nal
Pronunciation: ()ir-(r)ash-nl, -n-l
Function: adjective
1 : unable to reason <irrational beasts> <irrational from fever>
2 : not based on reason <irrational fear>
3 : being an irrational number <an irrational root of an equation>
- ir·ra·tio·nal·i·ty /()ir-(r)ash--nal-t-/ noun
- ir·ra·tio·nal·ly /()ir-(r)ash-n-l, -n-l-/ adverb