[1] : The Collaborative International Dictionary of English v.0.48

rationalist \ra"tionalist\, n. cf. f. rationaliste.
   one who accepts rationalism as a theory or system; also,
   disparagingly, a false reasoner. see citation under
   reasonist.
   1913 webster rationalistic
see also:
reasonist 

[2] : WordNet (r) 2.0

rationalist
     adj : of or relating to or characteristic of rationalism;
           "rationalist philosophy"
     n : someone who emphasizes observable facts and excludes
         metaphysical speculation about origins or ultimate causes
         syn: positivist
see also:
positivist 

Rationalist >> R Words
Rationalist, definition of term: Rationalist
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