Rationality
Pronunciation : Ra`tion*al"i*ty
Part of Speech : n.;
Etymology : [F. rationalit?, or L. rationalitas.]
Definition : Defn: 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.
pl. -ties.
Source : Webster's Unabridged Dictionary, 1913