As nouns the difference between mandibles and maxilla
is that mandibles is plural of lang=en while maxilla is either of the two bones that together form the upper jaw.
maxilla
Noun
Either of the two bones that together form the upper jaw.
Arachnid mouthpart
Synonyms
* jawbone
* maxillary bone
* (Arachnid mouthpart) endite
Derived terms
* maxillar
* maxillary
* maxillectomy
* maxilliferous
* maxilliform
* maxillo-
* maxillotomy