nastic

/nas-tik/US // ˈnæs tɪk //

弹性,弹性的,弹性物质,弹性胶布

Definitions

adj.形容词 adjective

1
Botany.
- : of or showing sufficiently greater cellular force or growth on one side of an axis to change the form or position of the axis.

There is no line of demarcation between tropic and nastic movements.
Moreover, the tropic action of unilateral light may become nastic by internal diffusion of excitation.
The employment of the term 'nastic' is, however, convenient when used in a well-defined and restricted sense.
No sharp distinction can therefore be made between the movements of growth and of variation, between tropic and nastic curvatures.
I have already referred to the distinction that is made between nastic and paratonic movements.