polygastricadj.n.

Brit.

/ˌpɒlɪˈɡastrɪk/, U.S.

/ˌpɑliˈɡæstrɪk/

Origin: Formed within English, by compounding. Etymons: poly- comb. form, gastric adj.

Etymology: < poly- comb. form + gastric adj., after monogastric adj. (see sense 2 at that entry) and (in the specific sense) scientific Latin Polygastrica ( C. G. Ehrenberg Infusionsthierchen als vollkommene Organismen (1838) p. xix, 1).

Zoology.

A. adj.

Having many stomachs or digestive cavities; spec. of or relating to the former group Polygastrica of protozoans whose food-containing vacuoles were thought to be separate digestive organs (now historical).

ΘΚΠ

the world > animals > animal body > general parts > internal organs and systems > [adjective] > having many stomachs

polygastric1833

paragastric1861

polygastrian1890

1833 Lancet 2 Nov. 196/2 Some of the polygastric animals exude on their surface a secretion which agglutinates..foreign particles floating in the waters which surround them.

1840 J. Timbs Year-bk. Facts 187 Of the polygastric animalcules, the gaillonelle contain a very large proportion of iron.

1849 Philos. Trans. (Royal Soc.) 139 426 In a polygastric Diphyes the common tube answers to the chamber into which the stomach of a monogastric Diphyes opens.

1865 Intellectual Observer No. 47. 389 Ehrenberg's polygastric theory.

1901 Amer. Naturalist 35 594 Diphyes pusilla... Polygastric, with two nectophores at the apex of a long tubular trunk.

1922 J. A. Thomson Outl. Sci. III. xxvii. 876 Ehrenberg defined his family ‘Vibrionia’ as ‘Filiform animals distinctly or apparently “polygastric”, without an alimentary canal.’

1950 R. W. Miner Field Bk. Seashore Life iii. 162 After fertilization takes place in the open sea, the larva grows into a new asexual polygastric generation.

1999 Jrnl. Pineal Res. 26 56 This indole may be involved in the modulation of gastrointestinal function of monogastric as well as polygastric ungulates.

†B. n.

A protozoan of the former group Polygastrica. Obsolete.

ΘΚΠ

the world > animals > invertebrates > protozoa > class Infusoria > [noun] > member of > having many digestive cavities

polygastrian1843

polygastric1846

1846 J. D. Dana U.S. Exploring Exped.: Zoophytes vii. 107 The Lernæoid division appears to reach the Polygastrics in the Acephalocist.

This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).

单词	polygastric
释义	polygastricadj.n. Brit. /ˌpɒlɪˈɡastrɪk/, U.S. /ˌpɑliˈɡæstrɪk/ Origin: Formed within English, by compounding. Etymons: poly- comb. form, gastric adj. Etymology: < poly- comb. form + gastric adj., after monogastric adj. (see sense 2 at that entry) and (in the specific sense) scientific Latin Polygastrica ( C. G. Ehrenberg Infusionsthierchen als vollkommene Organismen (1838) p. xix, 1). Zoology. A. adj. Having many stomachs or digestive cavities; spec. of or relating to the former group Polygastrica of protozoans whose food-containing vacuoles were thought to be separate digestive organs (now historical). ΘΚΠ the world > animals > animal body > general parts > internal organs and systems > [adjective] > having many stomachs polygastric1833 paragastric1861 polygastrian1890 1833 Lancet 2 Nov. 196/2 Some of the polygastric animals exude on their surface a secretion which agglutinates..foreign particles floating in the waters which surround them. 1840 J. Timbs Year-bk. Facts 187 Of the polygastric animalcules, the gaillonelle contain a very large proportion of iron. 1849 Philos. Trans. (Royal Soc.) 139 426 In a polygastric Diphyes the common tube answers to the chamber into which the stomach of a monogastric Diphyes opens. 1865 Intellectual Observer No. 47. 389 Ehrenberg's polygastric theory. 1901 Amer. Naturalist 35 594 Diphyes pusilla... Polygastric, with two nectophores at the apex of a long tubular trunk. 1922 J. A. Thomson Outl. Sci. III. xxvii. 876 Ehrenberg defined his family ‘Vibrionia’ as ‘Filiform animals distinctly or apparently “polygastric”, without an alimentary canal.’ 1950 R. W. Miner Field Bk. Seashore Life iii. 162 After fertilization takes place in the open sea, the larva grows into a new asexual polygastric generation. 1999 Jrnl. Pineal Res. 26 56 This indole may be involved in the modulation of gastrointestinal function of monogastric as well as polygastric ungulates. †B. n. A protozoan of the former group Polygastrica. Obsolete. ΘΚΠ the world > animals > invertebrates > protozoa > class Infusoria > [noun] > member of > having many digestive cavities polygastrian1843 polygastric1846 1846 J. D. Dana U.S. Exploring Exped.: Zoophytes vii. 107 The Lernæoid division appears to reach the Polygastrics in the Acephalocist. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < adj.n.1833
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