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periodontium

[per-ee-uh-don-shuh m, -shee-uh m]
noun, plural per·i·o·don·tia [per-ee-uh-don-shuh, -shee-uh] /ˌpɛr i əˈdɒn ʃə, -ʃi ə/.
  1. the bone, connective tissue, and gum surrounding and supporting a tooth.
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Origin of periodontium

From New Latin, dating back to 1955–60; see origin at peri-, -odont, -ium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for periodontium

n.

1828; see periodontal.

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Online Etymology Dictionary, © 2010 Douglas Harper

periodontium in Medicine

periodontium

(pĕr′ē-ə-dŏnshē-əm)
n. pl. per•i•o•don•tia (-shə, -shē-ə)
  1. The tissues that surround and support the teeth, including the gums, cementum, periodontal ligament, and alveolar and supporting bone.alveolodental membrane peridental membrane
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.