| 单词 | membrane bone |
| 释义 | > as lemmasmembrane bone membrane bone n. bone, or a bone, that develops within a sheet of mesenchymal tissue without prior formation of a cartilaginous primordium. ΚΠ 1866 Philos. Trans. (Royal Soc.) 156 128 The cartilage-bones have not all appeared, but the membrane-bones have attained to a degree of development almost equal to that which is found in an ordinary adult Lacertian. 1880 A. Günther Introd. Study of Fishes 91 The principal membrane-bone of the mandible is the dentary. 1999 Britannica Online (Version 99.1) at Integument The dermis..gives rise to so-called membrane bones—the bony scales of fishes, the bony plates in certain reptiles and mammals, and the membrane bones of the vertebrate skull. < as lemmas |
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