\Sche"sis\, n. [NL., fr. Gr. ?, fr. ?, ?, to have or
hold. See {Scheme}.]
1. General state or disposition of the body or mind, or of
   one thing with regard to other things; habitude. [Obs.]
   --Norris.
2. (Rhet.) A figure of speech whereby the mental habitude of
   an adversary or opponent is feigned for the purpose of
   arguing against him. --Crabb.