【医】 软骨[成]骨

[ noun ]
any bone that develops within cartilage rather than a fibrous tissue
<noun.body>

Cartilage \Car"ti*lage\, n. [L. cartilago; cf. F. cartilage.]
(Anat.)
A translucent, elastic tissue; gristle.

Note: Cartilage contains no vessels, and consists of a
homogeneous, intercellular matrix, in which there are
numerous minute cavities, or capsules, containing
protoplasmic cells, the cartilage corpuscul. See Illust
under {Duplication}.

{Articular cartilage}, cartilage that lines the joints.

{Cartilage bone} (Anat.), any bone formed by the ossification
of cartilage.

{Costal cartilage}, cartilage joining a rib with he sternum.
See Illust. of {Thorax}.