pneumatic bone
A surname. / Alternative form of Magdalen (“Magdalen College, Oxford”)
(anatomy) The transparent layer making up the outermost front part of the eye, covering the iris, pupil, and anterior chamber.
A four-wheeled pedal cycle. / A four-wheeled motorcycle, often resembling a small car (microcar).
(anatomy) Any bone, such as the mastoid process or those of the birds, that contains many hollow cells full of air
古生物学者は、化石化した空気を含む骨を慎重に調べ、それが飛ぶ祖先に属するのか陸生の近縁種に属するのかを判断した。
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