serosa

(sĭ-rō'sə, -zə)
n., pl., -sas, or -sae (-sē, -zē).

1. A serous membrane, especially one that lines the pericardial, pleural, and peritoneal cavities, enclosing their contents.
2. The chorion of a bird or reptile embryo.

[New Latin serōsa, feminine of serōsus, serous, from Latin serum, serum.]

serosal se·ro'sal (-zəl) adj.

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(sĭ-rō'sə, -zə)
n., pl. -sas or se·ro·sae (-sē, -zē).

1. See serous membrane.
2. The chorion of a bird or reptile embryo.

a serous membrane, especially the peritoneal covering.
—serosal adj.

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Any serous membrane.