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1. The lower jaw of a vertebrate animal.
2. Either the upper or lower part of the beak in birds.
3. 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.

[Middle English, from Old French, from Late Latin mandibula, from Latin mandere, to chew.]

man·dib′u·lar (-dĭb′yə-lər) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.mandibular - relating to the lower jawmandibular - relating to the lower jaw    
References in periodicals archive ?
The present case depicts therapeutic management of Canine Ehrlichiosis with corneal opacity, bilateral sub mandibular lymph node enlargement and concurrent Parvoviral gastro enteritis infection in a Labrador puppy.
An enlargement (more pronounced in the right frame) and a decrease in the echogenicity of the mandibular lymph nodes were observed in the ultrasonographic examination, however, no significant changes in their contour and echotexture, which were regular and homogeneous, respectively, were identified (Figure 1).
Histologically, pyogranulomatous inflammation is seen in facial skin and mandibular lymph nodes of affected dogs.