paratonic

/ ˌpærəˈtɒnɪk /

adjective

The change in torsion is, moreover, determined in reference to the paratonic action of incident geotropic stimulus.

I find that this autonomous movement becomes modified or even arrested by the paratonic effect of light.

I have already referred to the distinction that is made between nastic and paratonic movements.

They are mostly reflex or paratonic, and due to external stimuli.

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