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Webster 1913 Edition

‖

Noun.

pl.

Noun.

;

pl. L.

Pleuræ

(#)

, E.

Pleuras

(#)

[NL.,

Noun.

fem.

, fr. Gr. [GREEK] a rib, the side.]

(Anat.)

(a)

The smooth serous membrane which closely covers the lungs and the adjacent surfaces of the thorax; the pleural membrane.

(b)

The closed sac formed by the pleural membrane about each lung, or the fold of membrane connecting each lung with the body wall.

(Zool.)

Same as

Noun.

[Gr. the side.] In anatomy, a thin membrane which covers the inside of the thorax.