单词 | roofing bone |
释义 | > as lemmasroofing bone roofing bone n. Zoology any of the bones forming the cranial vault of the vertebrate skull. ΚΠ 1874 Nature 7 May 9/1 These scales pass insensibly into a set of bones..having the connections, positions, &c. which characterise the roofing-bones of one of the higher skulls (parietals, frontals, nasals, &c.). 1986 A. S. Romer & T. S. Parsons Vertebr. Body (ed. 6) viii. 241 In fishes, the canals are usually sunken into the substance of the roofing bones as closed tubes with occasional pores opening to the surface. < as lemmas |
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