Antiperistasis
Antiperistasis (an`ti*pe*ris"tȧ*sis) , noun
[Greek 'antiperi`stasis; 'anti` against + peri`stasis a standing around, from periista`nai to stand around; peri` around + "ista`nai to stand.]
Opposition by which the quality opposed acquires strength; resistance or reaction roused by opposition or by the action of an opposite principle or quality.