Main Entry: ra·tio·nal·i·ty

Pronunciation: \ˌra-shə-ˈna-lə-tē\

Function: noun

Inflected Form(s): plural ra·tio·nal·i·ties

Date: 1628

1 : the quality or state of being rational
2 : the quality or state of being agreeable to reason : reasonableness
3 : a rational opinion, belief, or practice —usually used in plural