Source : Webster's Revised Unabridged Dictionary (1913)

Molar \Mo"lar\, n. (Anat.)
   Any one of the teeth back of the incisors and canines. The
   molar which replace the deciduous or milk teeth are
   designated as {premolars}, and those which are not preceded
   by deciduous teeth are sometimes called {true molars}. See
   {Tooth}.