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1. Having a lesser degree of tension.
2. Having a lesser osmotic pressure than a reference solution, which is ordinarily assumed to be blood plasma or interstitial fluid; more specifically, refers to a fluid in which cells would swell.
Farlex Partner Medical Dictionary © Farlex 2012
hypoisotonic(hi?po-i?so-ton'ik) [? + isos, equal, + tonos, tension]
Medical Dictionary, © 2009 Farlex and Partners