Premaxilla definition

prēmăk-sĭlə
premaxillae
Frequency:
Either of two bones located in front of and between the maxillary bones in the upper jaw of vertebrates.
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Either of two bones in the upper jaw of vertebrates, situated between and in front of the maxillae, and fusing with them in the adult human being.
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Either of two bones located in front of and between the maxillary bones in the upper jaw of vertebrates.
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(anatomy) Either of a pair of bones in front of the maxillary bones in the upper vertebrate jaw.
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Alternative Forms

Alternative Form of premaxilla - praemaxilla

Other Word Forms

Noun

Singular:
premaxilla
Plural:
premaxillae

Premaxilla Sentence Examples

  • The premaxilla is always unpaired, but each half has three long processes directed backwards; one fuses with the maxillary bone, another helps to form the anterior part of the palate, while the third, together with its fellow, forms the " culmen " and extends backwards to the frontals, or rather to the ethmoid which there crops up on the surface.

  • The premaxilla generally carries a few small teeth.

  • The premaxilla is toothless.

  • Of these the first upper premolar is a simple tooth placed close behind the premaxilla and separated by a long gap from the two other teeth of the same series; while the lower incisors, of which the outermost is the largest, are directed partially forwards.

  • In the upper jaw there is a compressed, sharp-pointed, tusk-like incisor near the hind edge of the premaxilla, followed in the male at least by a moderate-sized, pointed, curved canine in the anterior part of the maxilla.

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Words near premaxilla in the Dictionary