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 (sĭ-rō′sə, -zə)
n. pl. se·ro·sas or se·ro·sae (-sē, -zē)
1. A serous membrane, especially one that lines the pericardial, pleural, and peritoneal cavities, enclosing their contents.
2. A membrane that surrounds the embryo of birds, reptiles, and many insects.

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

se·ro′sal (-zəl) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. (Anatomy) another name for serous membrane
2. (Zoology) one of the thin membranes surrounding the embryo in an insect's egg
[C19: from New Latin, from serōsus relating to serum]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(sɪˈroʊ sə, -zə)

n., pl. -sas, -sae (-sē, -zē).
1. the chorion, esp. of birds and reptiles.
[1885–90; < New Latin serōsa, feminine of serōsus < Latin ser(um)]
se•ro′sal, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.serosa - a thin membrane lining the closed cavities of the body; has two layers with a space between that is filled with serous fluid
pleura - the thin serous membrane around the lungs and inner walls of the chest
tissue layer, membrane - a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants
peritoneum - a transparent membrane that lines the abdominal cavity in mammals and covers most of the viscera
endocardium - the membrane that lines the cavities of the heart and forms part of the heart valves
pericardium - a serous membrane with two layers that surrounds the heart
epicardium, visceral pericardium - the innermost of the two layers of the pericardium
parietal pericardium - the tough outermost layer of the pericardium that is attached to the diaphragm and the sternum
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
At postoperative day 12, the injured serosae were almost fully repaired.