"Osmosis is the diffusion of water molecules across a semi-permeable membrane from an area of high concentration to an area of low concentration. In cells, osmosis occurs across the cellular membrane to keep a cell from becoming flaccid (not enough water) or turgid (too much water)."

ATTRIBUTION: http://www.brightstorm.com/science/biology/cell-functions-and-processes/osmosis
Last modified: Sunday, October 3, 2010, 8:35 PM