serosa

American  

[si-roh-suh, -zuh] / sɪˈroʊ sə, -zə /

noun

PLURAL

serosas, serosae

1. Embryology, Zoology.

   1. the chorion.

   2. a similar membrane in insects and other lower invertebrates.

2. serous membrane.

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serosa British  

/ sɪˈrəʊsə /

noun

1. another name for serous membrane

2. one of the thin membranes surrounding the embryo in an insect's egg

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Etymology

Origin of serosa

1885–90; < New Latin serōsa, feminine of serōsus, equivalent to Latin ser ( um ) serum + -ōsus -ose ¹

Example Sentences

Wheeler, however, compares with the “dorsal organ” the peculiar extra embryonic membrane or indusium which he has observed between serosa and amnion in the embryo of the grasshopper Xiphidium.

From Project Gutenberg

Ventral plate: a thickening of the blastoderm of an egg from which the embryo, but not the amnion or serosa is formed.

From Project Gutenberg

This depends upon whether the inflammation of the serosa quickly spreads or remains local.

From Project Gutenberg

In some midges and in caddis-flies the serosa becomes ruptured and absorbed, while the germ band, still clothed with the amnion, grows around the yolk.

From Project Gutenberg

S, serosa; A, amnion; E, ectoderm; N, rudiment of nerve-cord; M, mesodermal pouches.

From Project Gutenberg