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[kal-suh-fahy] /ˈkæl səˌfaɪ/
verb (used with or without object), calcified, calcifying.
Physiology. to make or become calcareous or bony; harden by the deposit of calcium salts.
Geology. to harden by deposition of calcium carbonate.
to make or become rigid or intransigent, as in a political position.
Origin of calcify
First recorded in 1830-40; calci- + -fy
Related forms
noncalcified, adjective
uncalcified, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for calcify
Historical Examples
  • The permanent incisors do not calcify until a year after birth.

    Degeneracy Eugene S. Talbot
  • My father did not achieve that for himself, as his arteries had started to calcify before he discovered the immortality vitamin.

    The Book of Gud Dan Spain
  • The underlying blood coagulates rapidly, and the periosteum begins to calcify within a few weeks, as shown by the X-ray.

    Scurvy Past and Present Alfred Fabian Hess
  • The permanent molars begin to calcify at the twenty-fifth week of fœtal life.

    Degeneracy Eugene S. Talbot
  • At the fifth year the second permanent molars, and at the eighth year the third molars or wisdom teeth, begin to calcify.

    Degeneracy Eugene S. Talbot
  • Caseation forms cheesy masses, which may soften into tubercular pus, may calcify, and may become encapsulated by fibroid tissue.

British Dictionary definitions for calcify


verb -fies, -fying, -fied
to convert or be converted into lime
to harden or become hardened by impregnation with calcium salts
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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Word Origin and History for calcify

1785 (implied in calcified), from French calcifier, from stem of Latin calcem "lime" (see chalk (n.)) + -fy. Related: Calcifying; calcification.

Online Etymology Dictionary, © 2010 Douglas Harper
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calcify in Medicine

calcify cal·ci·fy (kāl'sə-fī')
v. cal·ci·fied, cal·ci·fy·ing, cal·ci·fies
To make or become stony or chalky by deposition of calcium salts.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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