blastopore

[ blas-tuh-pawr, -pohr ]

noun

, Embryology.

1. the opening of an archenteron.

Other Words From

• blas·to·por·ic [blas, -t, uh, -, pawr, -ik, -, por, -], blas·to·po·ral [blas-t, uh, -, pawr, -, uh, l, -, pohr, -], adjective

Word History and Origins

Origin of blastopore¹

1875–80; blasto- + -pore passage; pore ²

Example Sentences

Amniotes, like chickens and humans, will have developed a primitive streak, the precursor to the brain and skin, while fish and amphibians will have developed a spherical-shaped blastopore.

From Science Daily

It has usually been regarded as representing both endoderm and mesoderm, and the groove which usually leads to its formation has been compared to the abnormally elongated blastopore of a typical gastrula.

From Project Gutenberg

The blastopore persists as the anal opening of the adult.

From Project Gutenberg

The blastopore generally occupies a position corresponding to the posterior end of the body.

From Project Gutenberg

Then the large cells recommence the process of division and sink into the hollow of the sphere, leaving an elongated groove, the blastopore, on the surface.

From Project Gutenberg