nyc·tit·ro·pism (n k-tt r -pz m)n. The tendency of the leaves of some plants to change their position at nightfall. [Greek nux, nukt-, night; see nekw-t- in Indo-European roots + -tropism.] nyc ti·tropic (-t-tr pk, -tr pk) adj. |
nyctitropism [nɪkˈtɪtrəˌpɪzəm]
n
(Life Sciences & Allied Applications / Botany) a tendency of some plant parts to assume positions at night that are different from their daytime positions
[nyct-, from Greek nukt-, nux night + -tropism]
nyctitropic [ˌnɪktɪˈtrɒpɪk] adj
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