v. intr. and trans. To ossify together; to unite into one bone.

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1877.  Coues, Fur Anim., vii. 203. All the bones of the skull finally coossify, excepting, of course, the mandible.

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1882.  O. C. Marsh, in Pop. Sc. Monthly, XX. 314. The fibula … may be co-ossified with the side of the tibia.

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  Hence Co-ossification, union (of two or more bones) into one bone.

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1885.  C. A. Buckmaster, in Brit. Almanac & Comp., 193. The co-ossification of the pelvic bones is peculiar.

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