tropisticadj.
/trəʊˈpɪstɪk/, U.S. /troʊˈpɪstɪk/ Biology.
= tropic adj.3 2.
ΘΚΠ
the world > life > biology > biological processes > movement > movement in response to stimuli > [adjective] > turning
tropic1899
tropistic1903
klinokinetic1940
1903 A. J. Ewart tr. W. Pfeffer Physiol. Plants II. vi. 73 From a physiological point of view the orienting curvatures produced by one sided stimulation may be termed ‘tropistic’.
1910 F. Keeble Plant-animals ii. 41 We may use the term tropistic to describe the reactions of both fixed and free organisms to directive stimuli.
1940 G. S. Carter Gen. Zool. Invertebr. v. 125 Unless parts of the eye-spot are differently stimulated, the reactions of flagellates to light cannot be tropistic, even when they are directive.
2006 R. Stahlberg & M. Taya in Y. Bar-Cohen Biomimetics xix. 474 Tropistic changes in growth direction are caused by different expansion rates on the opposite flanks of plant organs.
Derivatives
troˈpistically adv. = tropically adv.2
ΘΚΠ
the world > life > biology > biological processes > movement > movement in response to stimuli > [adverb] > turning
tropistically1908
klinokinetically1946
1908 C. S. Gager Effects Rays Radium Plants xv. 219 Experiments made for the purpose of detecting the existence of a..power to respond tropistically to a unilateral stimulation by the radium rays.
1939 Physiol. Zool. 12 389 The animals may be attracted tropistically to some particular region of a pond that at a particular time presented optimal chemical or physical conditions.
2003 J. Burnett Fungal Populations & Species i. 10/2 Hyphal anastomoses occur most frequently between terminal and lateral apices and are often preceded by tropistically determined growth responses.
This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022).
<
adj.1903