thigmotropism
Concise Oxford English Dictionary © 2008 Oxford University Press:
thigmotropism /ˌθɪgmə(ʊ)ˈtrəʊpɪz(ə)m/
▶noun Biology the turning or bending of a plant or other organism in response to a touch stimulus.
– derivatives
thigmotropic adjective.
thigmotropic adjective.
'thigmotropism' also found in these Oxford entries:

