Definition : The tendency of a gas or solute to pass from a point of higher pressure or concentration
to a point of lower pressure or concentration and to distribute itself throughout
the available space; a major mechanism of biological transport. [MeSH];
The tendency of a gas or solute to pass from a point of higher pressure or concentration
to a point of lower pressure or concentration and to distribute itself throughout
the available space; a major mechanism of biological transport. [MeSH]