nyctitropic

[ nik-ti-trop-ik, -troh-pik ]

/ ˌnɪk tɪˈtrɒp ɪk, -ˈtroʊ pɪk /

tending to assume at or just before nightfall positions unlike those maintained during the day, as the leaves or flowers of certain plants.

Origin of nyctitropic

First recorded in 1875–80; nycti- + -tropic

nyc·tit·ro·pism

[nik-ti-truh-piz-uh m] /nɪkˈtɪ trəˌpɪz əm/, noun

As an example of this, I give a record (Fig. 27) obtained with a specimen in which nyctitropic movement was very pronounced.

Life Movements in Plants |Sir Jagadis Chunder Bose
The obscurities in the nyctitropic movement of plants arises from the presence of numerous complicating factors.

Life Movements in Plants, Volume II, 1919 |Sir Jagadis Chunder Bose
The nyctitropic movement of plants affords another example of daily periodicity.

Life Movements in Plants |Sir Jagadis Chunder Bose
One species of Phyllanthus takes up in sunshine the nyctitropic attitude of another species.

More Letters of Charles Darwin Volume II |Charles Darwin

The description of this Nyctitropic Recorder will be given in the next paper.

Life Movements in Plants, Volume II, 1919 |Sir Jagadis Chunder Bose