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.

Origin of periodontium

From New Latin, dating back to 1955–60; see origin at peri-, -odont, -ium

periodontics

[per-ee-uh-don-tiks]
noun (used with a singular verb)
  1. the branch of dentistry dealing with the study and treatment of diseases of the periodontium.
Also per·i·o·don·tia [per-ee-uh-don-shuh, -shee-uh] /ˌpɛr i əˈdɒn ʃə, -ʃi ə/.

Origin of periodontics

1945–50; < New Latin periodont(ia) (see peri-, -odont, -ia) + -ics
Related formsper·i·o·don·tic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for periodontia

periodontics

noun
  1. (functioning as singular) the branch of dentistry concerned with diseases affecting the tissues and structures that surround teethAlso called: periodontology
Derived Formsperiodontic, adjectiveperiodontically, adverb

Word Origin for periodontics

C19: from peri- + -odontics, from Greek odōn tooth
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

Word Origin and History for periodontia

periodontics

n.

1948, from periodontia (1914; see periodontal) + -ics. Periodontic (adj.) is attested by 1889.

periodontium

n.

1828; see periodontal.

Online Etymology Dictionary, © 2010 Douglas Harper

periodontia in Medicine

periodontics

[pĕr′ē-ə-dŏntĭks]
n.
  1. The branch of dentistry concerned with the care and treatment of the tissues surrounding and supporting the teeth.periodontia
Related formsper′i•o•dontic adj.per′i•o•dontist n.

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

periodontia in Science

periodontics

[pĕr′ē-ə-dŏntĭks]
  1. The branch of dentistry that deals with the study and treatment of the tissues surrounding and supporting the teeth, especially the gums.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.