Planorbisn.

Brit.

/pləˈnɔːbɪs/, U.S.

/pləˈnɔrbəs/

Inflections: Plural Planorbes.

Origin: A borrowing from Latin. Etymon: Latin Planorbis.

Etymology: < scientific Latin Planorbis, genus name ( E. L. Geoffroy Traité sommaire des coquilles (1767) 12, after use as a specific name (in the genus Helix) by Linnaeus (1758)) < post-classical Latin Planorbis ( J. Petiver Gazophylacii (1702) 3; also as Plan-Orbis ) < classical Latin plānus plain adj.² + orbis orb n.¹ Compare French planorbe (1775; 1765 as plan-orbis).

Zoology.

A genus of freshwater snails (pond snails) characterized by a rounded shell in the form of a plane spiral; †a snail of this genus (obsolete).

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Gastropoda > [noun] > order Pulmonifera > Inoperculata > family Limnaeidae or Planorbidae > genus Planorbis

Planorbis1769

1769 J. Berkenhout Outl. Nat. Hist. Great Brit. & Ireland I. 205 Planorbis..Brown. Both sides convex.

1776 E. M. da Costa Elements Conchol. 201 The Planorbis River Snail.

1798 tr. J. F. G. de la Pérouse Voy. round World III. 302 Certain planorbes have a considerable external resemblance to the ammonites with cells.

1833 C. Lyell Princ. Geol. III. 238 We find in the marls and limestones the shells of the Planorbis, and other lacustrine testacea.

1876 P. J. Van Beneden Animal Parasites & Messmates 38 A gasteropod mollusc, similar to a Planorbis, which lives as a messmate in the body of an annelid.

1878 F. J. Bell & E. R. Lankester tr. C. Gegenbaur Elements Compar. Anat. 81 The planorbis-like shells of the Milliolidæ represent the simplest condition of these forms.

1918 A. Teixeira de Mattos tr. J. H. Fabre Sacred Beetle & Others i. 3 The placid mollusc tribe—Planorbes, Limnaei and other Water-snails were sucking in the air on the surface of the water.

1990 C. Pellant Rocks, Minerals & Fossils 127/3 Planorbis is characterized by coiling which is almost in a plane spiral, giving a very flat overall shape.

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

单词	planorbis
释义	Planorbisn. Brit. /pləˈnɔːbɪs/, U.S. /pləˈnɔrbəs/ Inflections: Plural Planorbes. Origin: A borrowing from Latin. Etymon: Latin Planorbis. Etymology: < scientific Latin Planorbis, genus name ( E. L. Geoffroy Traité sommaire des coquilles (1767) 12, after use as a specific name (in the genus Helix) by Linnaeus (1758)) < post-classical Latin Planorbis ( J. Petiver Gazophylacii (1702) 3; also as Plan-Orbis ) < classical Latin plānus plain adj.² + orbis orb n.¹ Compare French planorbe (1775; 1765 as plan-orbis). Zoology. A genus of freshwater snails (pond snails) characterized by a rounded shell in the form of a plane spiral; †a snail of this genus (obsolete). ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Gastropoda > [noun] > order Pulmonifera > Inoperculata > family Limnaeidae or Planorbidae > genus Planorbis Planorbis1769 1769 J. Berkenhout Outl. Nat. Hist. Great Brit. & Ireland I. 205 Planorbis..Brown. Both sides convex. 1776 E. M. da Costa Elements Conchol. 201 The Planorbis River Snail. 1798 tr. J. F. G. de la Pérouse Voy. round World III. 302 Certain planorbes have a considerable external resemblance to the ammonites with cells. 1833 C. Lyell Princ. Geol. III. 238 We find in the marls and limestones the shells of the Planorbis, and other lacustrine testacea. 1876 P. J. Van Beneden Animal Parasites & Messmates 38 A gasteropod mollusc, similar to a Planorbis, which lives as a messmate in the body of an annelid. 1878 F. J. Bell & E. R. Lankester tr. C. Gegenbaur Elements Compar. Anat. 81 The planorbis-like shells of the Milliolidæ represent the simplest condition of these forms. 1918 A. Teixeira de Mattos tr. J. H. Fabre Sacred Beetle & Others i. 3 The placid mollusc tribe—Planorbes, Limnaei and other Water-snails were sucking in the air on the surface of the water. 1990 C. Pellant Rocks, Minerals & Fossils 127/3 Planorbis is characterized by coiling which is almost in a plane spiral, giving a very flat overall shape. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). < n.1769
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