retrognathism

A condition of facial disharmony in which one or both jaws are posterior to normal in their craniofacial relationships; usually used in reference to the mandible. [retro- + G. gnathos, jaw]

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ret·ro·gnath·ism .re-trō-'nath-.iz-əm n a condition characterized by recession of one or both of the jaws <mandibular \retrognathism>

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ret·ro·gnath·ism (ret″ro-nathґiz-əm) [retro- + gnath- + -ism] abnormal posterior positioning of one or both jaws, particularly the mandible, relative to the facial skeleton and soft tissues. Called also retrognathia. retrognathic adj