homoiosmotic

ho·moi·os·mot·ic

adj \ˌhō-ˌmȯi-äz-ˈmät-ik\

Definition of HOMOIOSMOTIC

: having a bodily osmotic regulating mechanism and body fluids that differ in osmotic pressure from the surrounding medium or from seawater <homoiosmotic animals include all the land and freshwater vertebrates>—compare poikilosmotic