Anisotropic

physics. of unequal physical properties along different axes.
compare (def 1).
botany. of different dimensions along different axes.
historical examples

whether variation of temperature induces in anisotropic organs only one type of response, or two types, positive and negative.
life movements in plants, volume ii, 1919 sir jagadis chunder bose

thick lines represent the more excitable side of an anisotropic or dorsiventral organ.
life movements in plants, volume ii, 1919 sir jagadis chunder bose

the only condition requisite for the exhibition of response is the differential excitability of an anisotropic organ.
life movements in plants, volume ii, 1919 sir jagadis chunder bose

both are adapted for determining the axes of elasticity and for the differentiation of isotropic and anisotropic bodies.
microscopes and accessory apparatus ernst leitz

adjective
not isotropic; having different physical properties in different directions: anisotropic crystals
(of a plant) responding unequally to an external stimulus in different parts of the plant
adj.

1854; see an- (1) “not” + isotropic.

anisotropic an·i·so·trop·ic (ān-ī’sə-trŏp’ĭk, -trō’pĭk)
adj.

not isotropic.

having physical properties that differ according to the direction of measurement.

an·i’so·trop’i·cal·ly adv.
an’i·sot’ro·pism (-sŏt’rə-pĭz’əm) or an’i·sot’ro·py (-sŏt’rə-pē) n.
anisotropic
(ān-ī’sə-trō’pĭk, -trŏp’ĭk, ān’ī-)
differing according to orientation, as light scattered by a liquid crystal; light striking the liquid crystal’s surface at a 90° angle might not be reflected (so the surface appears dark when viewed head-on), while light striking it at shallower angles is reflected (so the surface appears illuminated when viewed from a shallow angle). compare isotropic.