maxilla

(redirected from maxillas)
Also found in: Dictionary, Thesaurus, Medical.

maxilla

1. the upper jawbone in vertebrates
2. any member of one or two pairs of mouthparts in insects and other arthropods used as accessory jaws

maxilla

[mak′sil·ə]
(anatomy)
The upper jawbone.
The upper jaw.
(invertebrate zoology)
Either of the first two pairs of mouthparts posterior to the mandibles in certain arthropods.