- 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for nyctitropic
The nyctitropic movement of plants affords another example of daily periodicity.
As an example of this, I give a record (Fig. 27) obtained with a specimen in which nyctitropic movement was very pronounced.
The extent of the nyctitropic movement varies in individual cases; in some it is slight, in others very large.
The description of this Nyctitropic Recorder will be given in the next paper.Life Movements in Plants, Volume II, 1919
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