† paragastrulan.

Origin: Formed within English, by derivation. Etymons: para- prefix¹, gastrula n.

Etymology: < para- prefix¹ + gastrula n. Compare earlier metagastrula n., perigastrula n.

Zoology. Obsolete. rare.

A stage in the development of the larva of certain calcareous sponges, formed by invagination of the amphiblastula.

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > [noun] > gastrula, etc.

perigastrula1876

gastraea1877

gastrula1877

paragastrula1887

1887 W. J. Sollas in Encycl. Brit. XXII. 425/1 The two-layered sac thus produced is a paragastrula; its outer layer, known as the epiblast, gives rise to the ectoderm, the inner layer or hypoblast to the endoderm.

Derivatives

† paragastrular adj. Obsolete rare Apparently only attested in dictionaries or glossaries.

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > [adjective] > gastrula

paragastrular1890

pregastrular1894

1890 Cent. Dict. 4275/3 Paragastrular, of or pertaining to a paragastrula; having the character of a paragastrula.

† paragastrulation n. Obsolete rare the formation of a paragastrula.Apparently only attested in dictionaries or glossaries.

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > [noun] > gastrula, etc. > formation of

gastrulation1879

paragastrulation1890

1890 Cent. Dict. 4275/3 Paragastrulation, the formation of a paragastrula by invagination of an amphiblastula.

This entry has been updated (OED Third Edition, June 2005; most recently modified version published online June 2021).

单词	paragastrula
释义	† paragastrulan. Origin: Formed within English, by derivation. Etymons: para- prefix¹, gastrula n. Etymology: < para- prefix¹ + gastrula n. Compare earlier metagastrula n., perigastrula n. Zoology. Obsolete. rare. A stage in the development of the larva of certain calcareous sponges, formed by invagination of the amphiblastula. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > [noun] > gastrula, etc. perigastrula1876 gastraea1877 gastrula1877 paragastrula1887 1887 W. J. Sollas in Encycl. Brit. XXII. 425/1 The two-layered sac thus produced is a paragastrula; its outer layer, known as the epiblast, gives rise to the ectoderm, the inner layer or hypoblast to the endoderm. Derivatives † paragastrular adj. Obsolete rare Apparently only attested in dictionaries or glossaries. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > [adjective] > gastrula paragastrular1890 pregastrular1894 1890 Cent. Dict. 4275/3 Paragastrular, of or pertaining to a paragastrula; having the character of a paragastrula. † paragastrulation n. Obsolete rare the formation of a paragastrula.Apparently only attested in dictionaries or glossaries. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > [noun] > gastrula, etc. > formation of gastrulation1879 paragastrulation1890 1890 Cent. Dict. 4275/3 Paragastrulation, the formation of a paragastrula by invagination of an amphiblastula. This entry has been updated (OED Third Edition, June 2005; most recently modified version published online June 2021). < n.1887
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