单词 | dermal bone |
释义 | dermal boneZoology noun A bone that does not have a cartilaginous precursor and is formed by differentiation of dermal mesenchyme cells into osteoblasts; specifically one which is connected with the ectodermal basement membrane by dentine or enamel, or which is homologous with such a bone. OriginMid 19th century; earliest use found in Gideon Mantell (1790–1852), surgeon and geologist. |
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