Normal force acting on a surface divided by the area of that surface. For a mixture
of gases the contribution by each
constituent is called the
partial
pressure,
where
is the
amount fraction of the
th
constituent and
is the total pressure.
Source:
PAC, 1996, 68, 957
(Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations
1996))
on page 987