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Webster 1913 Edition

Noun.

[Cf. F.

serosité

. See

The quality or state of being serous.

(Physiol.)

A thin watery animal fluid, as synovial fluid and pericardial fluid.

, In medicine, the watery part of the blood.

serosity ‎(countable and uncountable, plural serosities)

The quality or state of being serous.
(biology) A thin watery animal fluid, such as synovial fluid or pericardial fluid.