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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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.mandibular - relating to the lower jawmandibular - relating to the lower jaw    
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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.
There was a bilateral symmetrical enlargement of the mandibular lymph nodes with moderate heterogeneity following contrast.
Internal examination revealed diffuse marked reddening of all lung lobes and overlying dark patchy discoloration of dependent lobes; abundant frothy tracheal and bronchial fluid; enlargement and diffuse reddening of bronchial, tracheobronchial, and mandibular lymph nodes; prominent and diffuse reddening of both tonsils; and prominent white streaks at the corticomedullary junction of both kidneys.