| 单词 | flat-coil |
| 释义 | > as lemmasflat-coil flat-coil n. a pond-snail of the genus Planorbis, having its shell coiled in a plane. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Gastropoda > [noun] > order Pulmonifera > Inoperculata > family Limnaeidae or Planorbidae > genus Planorbis > member of post-horn pond snail1776 flat-coil1901 1901 E. Step Shell Life xvii. 319 The next section of these Pond-snails comprises the Flat-coils (Planorbis), made familiar by the typical species—the Ram's-horn or Trumpet-snail. 1926 A. E. Ellis Brit. Snails ii. 118 The snails of this family [sc. Planorbidæ] are popularly called Ram's-horns, Flat-coils, or Trumpet Snails. < as lemmas |
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