hapt-, hapto-, -hapte +

(Greek: touch, touching, fasten, contact, seizure; binding, attaching)

haptosis
Non-consensual sexual touching.
haptotropic
Curving in response to touch.
haptotropism
1. An orientation response to a touch or a contact stimulus.
2. The phenomenon whereby plant organs, as the tendrils of climbing plants, exhibit tropic movements in response to the stimulus of touch.
kinohapt
An esthesiometer for applying several stimuli to the skin at different distances and frequencies.