Mandible vs. Maxilla

The lower jaw of a vertebrate animal.

(Anatomy) Either of a pair of bones of the human skull fusing in the midline and forming the upper jaw.

Either the upper or lower part of the beak in birds.

A homologous bone of the skull in other vertebrates.

Any of various mouth organs of invertebrates used for seizing and biting food, especially either of a pair of such organs in insects and other arthropods.

Either of two laterally moving appendages situated behind the mandibles in insects and most other arthropods.

The jaw or a jawbone, especially the lower jawbone in mammals and fishes.

Syn of jaw.

Either of the upper and lower segments of a bird's beak.

An upper jaw especially of humans and other mammals in which the bony elements are closely fused.

Any of various invertebrate mouthparts serving to hold or bite food materials.

(skeleton) Either of the two bones that lie with one on each side of the upper jaw lateral to the premaxilla and that in higher vertebrates bear most of the teeth.

The bone, or principal bone, of the lower jaw; the inferior maxilla; - also applied to either the upper or the lower jaw in the beak of birds.

(zootomy) One of the first or second pair of mouthparts posterior to the mandibles in many arthropods that are used for tasting and manipulating food.

The anterior pair of mouth organs of insects, crustaceaus, and related animals, whether adapted for biting or not. See Illust. of Diptera.

The bone of either the upper or the under jaw.

The lower jawbone in vertebrates; it is hinged to open the mouth

One of the lower or outer jaws of arthropods.

The upper jawbone in vertebrates; it is fused to the cranium