单词 | frontal bone |
释义 | frontal bonenoun 1The bone which forms the front part of the skull and the upper part of the eye sockets.Unanimous skeletal features are few, but include a lack of contact between the squamosal and parietal bones in the skull and the presence of the frontal bone in forming the orbit....
1.1Either of the pair of bones from which the frontal bone is formed by fusion in infancy.Like tetrapods, but unlike all other fishes, they also have frontal bones in the skull roof....
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