| 单词 |
Clypeaster |
| 释义 |
Clypeˈaster Zool. [f. L. clype-us (= clipeus) round shield + Gr. ἄστηρ star.] A genus of echinoid Echinoderms, allied to the common sea-urchin, but having mouth and vent both below. Hence clypeˈastroid a. and n.
1836–9Todd Cycl. Anat. II. 33/2 In Clypeaster the shell is divided interiorly by vertical calcareous partitions. 1877Huxley Anat. Inv. An. ix. 574 The flattened Clypeastroid, Scutella. |
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