resistant (Adjective) — Relating to or conferring immunity (to disease or infection).
resistant (Adjective) — Able to tolerate environmental conditions or physiological stress. ex. "the new hybrid is more resistant to drought"
resistant (Adjective) — Impervious to being affected. ex. "resistant to the effects of heat" ex. "resistant to persuasion"
resistant (Adjective) — Disposed to or engaged in defiance of established authority.
resistant (Adjective) — Incapable of absorbing or mixing with. ex. "plastic highly resistant to steam and water"