noninvasive

non in va sive |ˌnäninˈvāsiv ˌnɑnɪnˈveɪsɪv | ▶adjective 1 (of medical procedures ) not requiring the introduction of instruments into the body: noninvasive techniques such as ultrasound. 2 (of a cancerous disease ) not tending to spread. • (of plants ) not tending to spread undesirably.