resistant /ɹəˈzɪstənt/adjective 3noun 2forms 3 adjective3 •Which makes resistance or offers opposition. •Which is not affected or overcome by a disease, drug, chemical or atmospheric agent, extreme of temperature, etc.The infection is resistant to antibiotics. •Not greatly influenced by individual members of a sample. noun2 •A person who resists; especially a member of a resistance movement. •A thing which resists. formsresistants · more resistant · most resistant