lyotropic

English

Etymology

lyo- +‎ -tropic, c. 1910, presumably borrowed from German,[1] or by analogy with earlier lyo- terms such as lyophilic or lyophilization (1894). From Ancient Greek λύω (lúō, “to loosen, to dissolve”) + τροπικός (tropikós, “of or pertaining to a turn or change; or the solstice; or a trope or figure; tropic; tropical; etc.”), from τροπή (tropḗ, “turn; solstice; trope”).

Adjective

lyotropic (not comparable)

(chemistry, physics) describing a liquid crystal that exhibits phase transitions as a function of concentration
- 1910, The Journal of Physical Chemistry, volume 14, pp. 628–629
  “We can however say that, with electrolytes, the effects are always lyotropic. Sulphates, tartrates, etc., raise the point of solidification, decrease the period of solidification, and increase the rate of change of the viscosity with the time. They therefore help the solidification.”
- 1910, The British Journal of Photography, volume 57, p. 631:
  It is interesting to note that sulphates head of of Freundlich’s lyotropic series; but I fear that this is merely a coincidence.

References

Both 1910 English sources cite the 1909 German chemistry text Kapillarchemie by Herbert Freundlich

[1] Both 1910 English sources cite the 1909 German chemistry text Kapillarchemie by Herbert Freundlich

单词	lyotropic
释义	lyotropic English Etymology lyo- +‎ -tropic, c. 1910, presumably borrowed from German,[1] or by analogy with earlier lyo- terms such as lyophilic or lyophilization (1894). From Ancient Greek λύω (lúō, “to loosen, to dissolve”) + τροπικός (tropikós, “of or pertaining to a turn or change; or the solstice; or a trope or figure; tropic; tropical; etc.”), from τροπή (tropḗ, “turn; solstice; trope”). Adjective lyotropic (not comparable) (chemistry, physics) describing a liquid crystal that exhibits phase transitions as a function of concentration 1910, The Journal of Physical Chemistry, volume 14, pp. 628–629 “We can however say that, with electrolytes, the effects are always lyotropic. Sulphates, tartrates, etc., raise the point of solidification, decrease the period of solidification, and increase the rate of change of the viscosity with the time. They therefore help the solidification.” 1910, The British Journal of Photography, volume 57, p. 631: It is interesting to note that sulphates head of of Freundlich’s lyotropic series; but I fear that this is merely a coincidence. References Both 1910 English sources cite the 1909 German chemistry text Kapillarchemie by Herbert Freundlich
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