the act or process of ossifying.
the state of being ossified.
something that has ossified; a bony formation.

1690–1700; < Latin ossi-, combining form of os bone + -fication

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World English Dictionary
ossification (ˌɒsɪfɪˈkeɪʃən)
1.  the formation of or conversion into bone
2.  the process of ossifying or the state of being ossified

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Word Origin & History

1697, from L. ossis (gen. of os) "of bones" (see osseous).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

ossification os·si·fi·ca·tion (ŏs'ə-fĭ-kā'shən)

  1. The natural process of bone formation.

  2. The hardening or calcification of soft tissue into a bonelike material.

  3. A mass or deposit of such material.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
ossification  [%PREMIUM_LINK%]     (ŏs'ə-fĭ-kā'shən)  Pronunciation Key 
The process of bone formation, brought about by the action of specialized bone cells called osteoclasts, which absorb old bone tissue, and osteoblasts, which form from osteoclasts and produce new bone tissue. This remodeling of bone is a constant process that maintains bone strength. See more at osteoblast, osteoclast.

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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica


process by which new bone is produced. Ossification begins about the third month of fetal life in humans and is completed by late adolescence. The process takes two general forms, one for compact bone, which makes up roughly 80 percent of the skeleton, and the other for cancellous bone, including parts of the skull, the shoulder blades, and the ends of the long bones

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
All lawyers are familiar with the phenomenon of doctrinal ossification.
Ossification begins in the body about the eighth week of fetal life, and extends toward the extremities.
Ossification begins in the body, about the eighth week of fetal life.
Ossification of muscular tissue as a result of repeated strain or injury is not infrequent.
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