Rā'tion-āl'i-ty, n.

(rāsh'un-), n. [Fr. rationalité, Sp. racionalidad, It. razionalità, Lat. rationalitas.] The quality of being rational; possession of reason; due exercise of reason; reasonableness. “Well-directed intentions, whose rationalities will not bear a rigid examination.” Browne.

God has made rationality the common portion of mankind. Gov. of Tongue.