periodontium

noun
peri·​odon·​tium | \ ˌper-ē-ō-ˈdän-ch(ē-)əm How to pronounce periodontium (audio) \
plural periodontia\ -​ch(ē-​)ə How to pronounce periodontia (audio) \

Medical Definition of periodontium

: the supporting structures of the teeth including the cementum, the periodontal ligament, the bone of the alveolar process, and the gums

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to make a temporary encampment

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