thermotropicadj.

Brit.

/θəːmə(ʊ)ˈtrɒpɪk/,

/θəːmə(ʊ)ˈtrəʊpɪk/, U.S.

/ˌθərməˈtrɑpɪk/

Etymology: < Greek θερμο-, thermo- comb. form + -τροπος turning + -ic suffix: compare heliotropic adj.

Botany.

1. Turning or bending under the influence of heat; of, pertaining to, or exhibiting thermotropism.

ΘΚΠ

the world > plants > part of plant > growth, movement, or curvature of parts > [adjective] > undergoing tropism

geotropic1875

heliotropic1875

paratonic1875

apheliotropic1880

apogeotropic1880

nyctitropic1880

paraheliotropic1880

plagiotropic1882

phototropic1883

selenotropic1883

rheotropic1884

orthotropic1885

thermotropic1885

haptotropic1888

traumatropic1898

plagiotropous1900

aphototropic1903

orthotropous1909

1885 G. L. Goodale in A. Gray & G. L. Goodale Bot. Text-bk. (ed. 6) II. ii. xii. 394 Curvatures dependent upon temperature are called thermotropic.

2. Physical Chemistry. Brought about or effected by a change in temperature: used esp. with reference to mesophases and their phase transitions.

ΘΚΠ

the world > matter > chemistry > physical chemistry > mesophases > [adjective] > thermotropic phase transition

thermotropic1909

1909 Senier & Shepheard in Jrnl. Chem. Soc. XCV. ii. 1945 Phototropic and thermotropic reactions are more probably due to isomeric changes affecting the aggregation of molecules in solids than to intramolecular change.

1962 G. W. Gray Molecular Structure & Properties of Liquid Crystals i. 5 Mesophases are most commonly observed when a suitable compound is heated to a temperature above that at which the crystal lattice is stable. This type of mesomorphism is called thermotropic.

1966 Molecular Crystals II. 55 Lyotropic systems are also thermotropic and it is the co~operative action of the temperature and of the solvent which enables them to pass successively from the solid crystalline state to the liquid crystalline state and to the isotropic liquid or dissolved state.

1972 Physics Bull. May 279/3 This article will be concerned only with those liquid crystals, known as thermotropic, where the phase transitions are induced by a change in temperature.

1978 Nature 13 Apr. 646/1 The membrane lipids of cells cultured in these conditions show a greatly sharpened thermotropic gel-to-liquid crystalline phase transition.

This entry has not yet been fully updated (first published 1912; most recently modified version published online March 2022).

单词	thermotropic
释义	thermotropicadj. Brit. /θəːmə(ʊ)ˈtrɒpɪk/, /θəːmə(ʊ)ˈtrəʊpɪk/, U.S. /ˌθərməˈtrɑpɪk/ Etymology: < Greek θερμο-, thermo- comb. form + -τροπος turning + -ic suffix: compare heliotropic adj. Botany. 1. Turning or bending under the influence of heat; of, pertaining to, or exhibiting thermotropism. ΘΚΠ the world > plants > part of plant > growth, movement, or curvature of parts > [adjective] > undergoing tropism geotropic1875 heliotropic1875 paratonic1875 apheliotropic1880 apogeotropic1880 nyctitropic1880 paraheliotropic1880 plagiotropic1882 phototropic1883 selenotropic1883 rheotropic1884 orthotropic1885 thermotropic1885 haptotropic1888 traumatropic1898 plagiotropous1900 aphototropic1903 orthotropous1909 1885 G. L. Goodale in A. Gray & G. L. Goodale Bot. Text-bk. (ed. 6) II. ii. xii. 394 Curvatures dependent upon temperature are called thermotropic. 2. Physical Chemistry. Brought about or effected by a change in temperature: used esp. with reference to mesophases and their phase transitions. ΘΚΠ the world > matter > chemistry > physical chemistry > mesophases > [adjective] > thermotropic phase transition thermotropic1909 1909 Senier & Shepheard in Jrnl. Chem. Soc. XCV. ii. 1945 Phototropic and thermotropic reactions are more probably due to isomeric changes affecting the aggregation of molecules in solids than to intramolecular change. 1962 G. W. Gray Molecular Structure & Properties of Liquid Crystals i. 5 Mesophases are most commonly observed when a suitable compound is heated to a temperature above that at which the crystal lattice is stable. This type of mesomorphism is called thermotropic. 1966 Molecular Crystals II. 55 Lyotropic systems are also thermotropic and it is the co~operative action of the temperature and of the solvent which enables them to pass successively from the solid crystalline state to the liquid crystalline state and to the isotropic liquid or dissolved state. 1972 Physics Bull. May 279/3 This article will be concerned only with those liquid crystals, known as thermotropic, where the phase transitions are induced by a change in temperature. 1978 Nature 13 Apr. 646/1 The membrane lipids of cells cultured in these conditions show a greatly sharpened thermotropic gel-to-liquid crystalline phase transition. This entry has not yet been fully updated (first published 1912; most recently modified version published online March 2022). < adj.1885
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