periodontium

[ per-ee-uh-don-shuhm, -shee-uhm ]
/ ˌpɛr i əˈdɒn ʃəm, -ʃi əm /

noun, plural per·i·o·don·tia [per-ee-uh-don-shuh, -shee-uh]. /ˌpɛr i əˈdɒn ʃə, -ʃi ə/.

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. 2020

Medical definitions for periodontium

periodontium
[ pĕr′ē-ə-dŏnshē-əm ]

n. pl. per•i•o•don•tia (-shə, -shē-ə)

The tissues that surround and support the teeth, including the gums, cementum, periodontal ligament, and alveolar and supporting bone.alveolodental membrane peridental membrane
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.