V2EX isotonic

Isotonic

释义 Definition

等渗的;等张的(isotonic):指溶液的渗透压与另一种溶液(常见为人体体液或细胞内液)相同或接近,因此不会引起细胞明显吸水胀裂或失水皱缩。在运动与营养语境中也常指“等渗饮料”,强调其溶质浓度与体液相近、利于补水吸收。该词还有“等张的(肌肉收缩)”等用法。

发音 Pronunciation (IPA)

/asotnk/

例句 Examples

An isotonic saline solution is often used to clean wounds.
等渗生理盐水常用于清洁伤口。

Because the drink is isotonic, it can help replace fluids and electrolytes without upsetting your stomach.
由于这种饮料是等渗的,它有助于补充水分和电解质,同时不太容易刺激肠胃。

词源 Etymology

isotonic 来自希腊语构词:iso- 表示“相同”,tonic 与“张力、压力、肌张力”有关(源自 tonos “张力/拉力”)。合起来字面意思是“相同张力(或相同渗透压)的”,因此在生理学、化学与运动科学中被用来描述“等渗/等张”的状态。

相关词 Related Words

文学作品示例 Literary Works

  • Principles of Biochemistry(Lehninger 等):在细胞与溶液“等渗/高渗/低渗”相关章节中常出现 isotonic
  • Guyton and Hall Textbook of Medical Physiology(Guyton & Hall):在体液与细胞容积调节、渗透压等内容中使用 isotonic
  • Campbell Biology(Campbell 等):讲解渗透作用与细胞在不同张度溶液中的反应时出现 isotonic
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