Ra`tion*al"i*ty (?), n.; pl. -ties (#). [F. rationalit'e, or L. rationalitas.]
The quality or state of being rational; agreement with reason; possession of reason; due exercise of reason; reasonableness.
When God has made rationality the common portion of mankind, how came it to be thy inclosure?
Gov. of Tongue.
Well-directed intentions, whose rationalities will never bear a rigid examination.
Sir T. Browne.
© Webster 1913.