re·sist·ant I. adjective alsore·sist·ent\-stənt\ Etymology:resistant from Middle French resistent, resistant, from Latin resistent-, resistens, present participle of resistere to resist; resistent from Latin resistent-, resistens : making or having powers of resistance : resisting < a constitution resistant to disease > — often used in combination < corrosion-resistant materials > II. noun (-s) : one that resists : resister