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[per-ee-uh-don-shuh m, -shee-uh m] /ˌpɛr i əˈdɒn ʃəm, -ʃi əm/
noun, plural periodontia
[per-ee-uh-don-shuh, -shee-uh] /ˌpɛr i əˈdɒn ʃə, -ʃi ə/ (Show IPA)
the bone, connective tissue, and gum surrounding and supporting a tooth.
Also, parodontium.
Origin of periodontium
From New Latin, dating back to 1955-60; See origin at peri-, -odont, -ium Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Word Origin and History for periodontium

1828; see periodontal.

Online Etymology Dictionary, © 2010 Douglas Harper
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periodontium in Medicine

periodontium per·i·o·don·ti·um (pěr'ē-ə-dŏn'shē-əm)
n. pl. per·i·o·don·ti·a (-shē-ə, -shə)
The tissues that surround and support the teeth, including the gums, cementum, periodontal ligament, and alveolar and supporting bone. Also called alveolodental membrane, peridental membrane.

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