osmoregulation: Meaning and Definition of

os•mo•reg•u•la•tion

Pronunciation: (oz"mō-reg"yu-lā'shun, os"-), [key]
— n.
  1. the process by which cells and simple organisms maintain fluid and electrolyte balance with their surroundings.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.