| 释义 |
Definition of maxilla in English: maxillanounPlural maxillae makˈsɪləmækˈsɪlə Anatomy Zoology 1The jaw or jawbone, specifically the upper jaw in most vertebrates. In humans it also forms part of the nose and eye socket. Example sentencesExamples - The maxilla fuses with the vomer bone and the nasal septum.
- Anteriorly, the ventral margin of the maxilla curves dorsally.
- There are five large teeth on the maxillae (upper jaw bone), rather short canines, and at least twenty small and uniform post-canines.
- 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.
- Two major bones of the upper jaw, the maxilla, and the premaxilla, were previously firmly attached to the skull and had teeth.
Synonyms jawbone, lower jaw, mandible - 1.1 (in many arthropods) each of a pair of mouthparts used in chewing.
Example sentencesExamples - 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 right maxilla, measuring 4.5 x 4.5 x 5 cm, was received for pathologic evaluation.
- 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.
Origin Late Middle English: from Latin, 'jaw'. Definition of maxilla in US English: maxillanounmakˈsiləmækˈsɪlə Anatomy Zoology 1The jaw or jawbone, specifically the upper jaw in most vertebrates. In humans it also forms part of the nose and eye socket. Example sentencesExamples - 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.
- 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.
- 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.
Synonyms jawbone, lower jaw, mandible - 1.1 (in many arthropods) each of a pair of mouthparts used in chewing.
Example sentencesExamples - The right maxilla, measuring 4.5 x 4.5 x 5 cm, was received for pathologic evaluation.
- First, Protohadros has a very large pair of maxillae.
- In the dried skin, the maxilla is blackish except for the tip, which is paler.
- The mouthparts consist of a pair of mandibles and 2 pairs 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.
Origin Late Middle English: from Latin, ‘jaw’. |