[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/.

the bone, connective tissue, and gum surrounding and supporting a tooth.

Origin of periodontium

From New Latin, dating back to 1955–60; see origin at peri-, -odont, -ium Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Word Origin and History for periodontium

1828; see periodontal.

Online Etymology Dictionary, © 2010 Douglas Harper

periodontium in Medicine



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.