||Em`py*e"ma (?), n. [NL., fr. Gr. ?,
from ? to suppurate; ? in + ? pus.] (Med.) A
collection of blood, pus, or other fluid, in some cavity of the body,
especially that of the pleura. Dunglison.
☞ The term empyema is now restricted to a collection
of pus in the cavity of the pleura.