Question

define diffusion ????​

Answer 1

It is the movement of fluid from higher concentation to lower concentration area

Answer 2

$\sf\huge\underline{Answer}$

Diffusion is the movement of water molecules from a region of high concentration to a region of lower concentration.

The word diffusion comes from the Latin word, "diffundere" that means "to spread away out".

Additional information :-

$\bullet$ Osmosis is the movement of a liquid or a gas molecule from a region of low concentration to a region a high concentration through a semi-permeable membrane. Osmosis is different from Diffusion.