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[os-tee-uh-blast] /ˈɒs ti əˌblæst/
noun, Anatomy.
a bone-forming cell.
Origin of osteoblast
1870-75; osteo- + -blast
Related forms
osteoblastic, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for osteoblast


a bone-forming cell
Derived Forms
osteoblastic, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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osteoblast in Medicine

osteoblast os·te·o·blast (ŏs'tē-ə-blāst')
A cell from which bone develops; a bone-forming cell.

os'te·o·blas'tic adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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osteoblast in Science
A specialized bone cell that produces and deposits the matrix that is needed for the development of new bone and consists primarily of collagen fibers. Osteoblasts are formed from osteoclasts on the outer surfaces of bone and in bone cavities, and bone deposition takes place constantly in living bone. As new bone grows and hardens with the addition of calcium and phosphate, osteoblasts become embedded in the bone matrix and develop into osteocytes.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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