| 单词 | head cone |
| 释义 | > as lemmashead cone head cone n. Zoology rare a conical appendage, present in two or three pairs, surrounding the mouth of some pteropod molluscs. ΚΠ 1848 T. R. Jones in Todd's Cycl. Anat. & Physiol. IV. 176/1 The mouth of the Clio is a vertical fissure, that is easily displayed by slightly folding back the head-cones. 2000 Biol. Bull. 198 302 Single pair of posterior head cones. < as lemmas |
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