SchesisSche"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.