maxilla

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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.
References in periodicals archive ?
6a,b; Table maxillar bone beside 3e,f); the base of the nasal --a single boar-tusk cavity (Fig.
Dark brown, except for the following: labial and maxillar palps yellow; antennal scape, pedicel and flagellomeres I and II yellow, the remaining flagellomeres dark brown; terguite I, anterior and middle terguite II, yellowish brown; terguite III brown; fore and middle legs yellowish; hind femur yellow proximally, distally brown, femoral tooth yellow; hind tibia yellow, except distal 1/3, brown.
37) and maxillar hair tuft; labium dark brown, cream distally, trapezoidal with slightly concave distal margin; sternum shield-shaped, rebordered, dark red-brown with black mottling, with dense white feathery setae and scattered long erect setae; intercoxal sclerites present between all coxal pairs; precoxal triangles present; pleural bars isolated.
That saltwater crocodile Crocodylus porosus (Schneider, 1801) get also the doubble canines of maxillar teeth 4/5.
Granulomas extended into the oral cavity between the maxillar teeth and the palate.
The following manifestations were found in three consecutive generations of one family: multiple tooth loss, upper side incisive agenesis, ectopic eruption of the permanent maxillar first molar and intra-bone displacement of the upper canines.
PC-GCUF 10/13, li1; PC-GCUF 10/12, right maxillar fragment with P4-M2.