Defn: A collection of blood, pus, or other fluid, in some cavity of the body, especially that of the pleura. Dunglison.

Note: The term empyema is now restricted to a collection of pus in the cavity of the pleura.

EMPYESIS
Em`py*e"sis, n. Etym: [NL., fr. Gr. (Med.)

Defn: An eruption of pustules.

EMPYREAL
Em*pyr"e*al, a. Etym: [L. empyrius, empyreus, fiery, Gr. In, and
Fire.]

Defn: Formed of pure fire or light; refined beyond aërial substance;
pertaining to the highest and purest region of heaven.
Go, soar with Plato to the empyreal sphere. Pope.
Empyreal air, oxygen gas.

EMPYREAL
Em*pyr"e*al, n.

Defn: Empyrean. Mrs. Browning.

EMPYREAN
Em`py*re"an, n. Etym: [See Empyreal.]

Defn: The highest heaven, where the pure element of fire was supposed by the ancients to subsist. The empyrean rung With hallelujahs. Milton.