Definition of osmoregulate in US English:

osmoregulate

verb

Physiology
  • no object To regulate the body's content of water and solutes; to maintain the osmotic concentration of body fluids at a constant level or within certain limits.

Origin

1950s; earliest use found in Journal of Experimental Biology. From osmo- + regulate, after osmoregulating.

Pronunciation

osmoregulate

/ˌɒzmə(ʊ)ˈrɛɡjʊleɪt/