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blastopore

American  
[blas-tuh-pawr, -pohr] / ˈblæs təˌpɔr, -ˌpoʊr /

noun

Embryology.
  1. the opening of an archenteron.


Other Word Forms

  • blastoporal adjective
  • blastoporic adjective

Etymology

Origin of blastopore

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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

One end of the blastopore becomes nearly closed, and an ingrowth of ectoderm takes place around it to form the stomodaeum or fore-gut and mouth.

From Project Gutenberg