等とう張ちょう液えきとうちょうえきMeanings1nounisotonic solutionTechnical term used in biology, medicine, and chemistry for a solution with the same osmotic pressure as a reference solution, typically body fluids.生せい理り食しょく塩えん水すいは等とう張ちょう液えきの一いっ種しゅです。