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The jaw or jawbone, specifically the upper jaw in most vertebrates. In humans it also forms part of the nose and eye socket.
jawbone, lower jaw, mandible
- ‘There are five large teeth on the maxillae (upper jaw bone), rather short canines, and at least twenty small and uniform post-canines.’
- ‘Anteriorly, the ventral margin of the maxilla curves dorsally.’
- ‘Two major bones of the upper jaw, the maxilla, and the premaxilla, were previously firmly attached to the skull and had teeth.’
- ‘The maxilla fuses with the vomer bone and the nasal septum.’
- ‘It may also have had a role in giving some minor flexibility to the snout, as it tends to insert ventrally between the maxilla and premaxilla, and dorsally between the nasal and premaxilla.’
- 1.1(in many arthropods) each of a pair of mouthparts used in chewing.
- ‘First, Protohadros has a very large pair of maxillae.’
- ‘Behind the mandibles, Mandibulata bear one, or more typically, two pairs of maxillae, frequently with a long palp, as in the second maxilla of Macrocyclops.’
- ‘The mouthparts consist of a pair of mandibles and 2 pairs of maxillae.’
- ‘In the dried skin, the maxilla is blackish except for the tip, which is paler.’
- ‘The right maxilla, measuring 4.5 x 4.5 x 5 cm, was received for pathologic evaluation.’
Late Middle English from Latin, ‘jaw’.
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