Definition of "Resistant" :
adjective: incapable of absorbing or mixing with
"Plastic highly resistant to steam and water."
adjective: disposed to or engaged in defiance of established authority
adjective: impervious to being affected
"Resistant to the effects of heat."
adjective: relating to or conferring immunity (to disease or infection)
adjective: able to tolerate environmental conditions or physiological stress
"The new hybrid is more resistant to drought."