Every cell needs water, and Osmosis is a special type of diffusion by which water equalizes itself within the cell and outside the cell. Here are some facts about Osmosis. For more information about Osmosis, or where WE got the information and definitions, check out the Reference Section

Osmosis is a special type of diffusion by which water passes into & out of the cell.

n : diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal

movement of a solvent through a semipermeable membrane (as of a living cell) into a solution of higher solute concentration that tends to equalize the concentrations of solute on the two sides of the membrane

Facts about Osmosis

-Special diffusion by which water can get into or out of the cell
-Water molecules move from a place where there is higher concentration, to where there is lower concentration.
-Keeps cell from drying out, or from exploding
-Does not require the cell to use up energy reserves
-Osmosis only occurs during water inbalance inside and outside the cell
- Osmosis BALANCES WATER INSIDE AND OUTSIDE THE CELL

This is osmosis.

This isn't.

Basically, Osmosis is a balancing of the water inside and out of the cell. If there is a lot of water inside the cell and not enough outside, the water on the inside goes outside. And Vice Versa. It's pretty simple. And what's cool is that it doesn't really use up the cells energy. If you still can't get the picture, think of it as a scale. A naturally self-correcting scale. When one side tips over it naturally corrects itself and becomes balanced again.