endoderm

[ en-duh-durm ]

noun

1. Also called endoblast. Embryology. the innermost cell layer of the embryo in its gastrula stage.
2. Anatomy. the innermost body tissue that derives from this layer, as the gut lining.

endoderm

/ ˈɛndəʊˌdɜːm /

noun

1. the inner germ layer of an animal embryo, which gives rise to the lining of the digestive and respiratory tracts See also ectoderm mesoderm

endoderm

/ ĕn′də-dûrm′ /

1. The innermost of the primary germ layers of an animal embryo. In vertebrates, the endoderm gives rise to the respiratory tract, gastrointestinal tract (except mouth and anus), glands associated with the gastrointestinal tract, bladder, and urethra.
2. Compare ectoderm

Derived Forms

• ˌendoˈdermal, adjective

Other Words From

• endo·dermal endo·dermic adjective

Word History and Origins

Origin of endoderm¹

1825–35; < French endoderme; endo-, -derm

Example Sentences

Ahlborn, in 1884, drew a sharp distinction between the segments of the mesoderm and those of the endoderm.

From Project Gutenberg

In yet others it is partly derived from endoderm and partly from ectoderm (primitive streak of amniotic Vertebrates).

From Project Gutenberg

In it cleavage gives rise to a solid mass, which divides by delamination into two layers, the ectoderm and endoderm.

From Project Gutenberg

The endoderm, on the other hand, gives rise to the lining of the enteron, and of the glands which open into it.

From Project Gutenberg

These are three in number, being called respectively the ectoderm, endoderm and The layer theory.

From Project Gutenberg