phossy jaw

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jaw

 [jaw]
either the mandible (lower jaw) or the maxilla (upper jaw), two opposing bony structures of the mouth of a vertebrate; they bear the teeth and are used for seizing prey, for biting, or for masticating food. See anatomic Table of Bones in the Appendices.
cleft jaw a cleft between the median nasal and maxillary processes through the alveolus; see also cleft palate. Called also gnathoschisis.
Hapsburg jaw a mandible that is prognathous, often accompanied by Hapsburg lip. See illustration.
Hapsburg jaw with Hapsburg lip.
phossy jaw phosphonecrosis.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
A condition caused by chronic occupation-related poisoning by elemental or yellow phosphorus which causes mandibular necrosis, in particular in factories producing yellow/white phosporus-based matches
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

phos·sy jaw

(fosē jaw)
Phosphorus necrosis of the jaw, caused by overexposure of white phosphorus, which was used in the manufacture of matches until the early 20th century; agent is still used for signaling, filtering, and incendiary purposes.
Medical Dictionary for the Dental Professions © Farlex 2012