Definition of mandible in English:

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Pronunciation: /ˈmandɪb(ə)l/


Anatomy & Zoology
1The jaw or a jawbone, especially the lower jawbone in mammals and fishes.
Example sentences
  • The tongue is suspended from the inside of the mandible above the hyoid bone and has muscles with a range of different orientations.
  • In the mandible, there are four incisors, two canines, four premolars, and six molars.
  • Most use their maxillae and mandibles to take in food.
1.1Either of the upper and lower parts of a bird’s beak: the drake is all black except for an orange mark on the upper mandible
More example sentences
  • The upper mandible of the bill is dark, and the legs are bright orange.
  • Breeding adults have a laterally flattened horn on the upper mandible.
  • The bill is a pinkish horn color and dark markings appear on the upper mandible.
1.2Either half of the crushing organ in an arthropod’s mouthparts.
Example sentences
  • They crush the honeybees in their mandibles one after another until the bees are all dead.
  • Centipedes were measured from the tip of the upper mandible to the posterior end of the last body segment.
  • The trap-jaw ant fires its mandibles with such force to propel itself to the front of the pack.



Pronunciation: /manˈdɪbjʊlə/
Example sentences
  • Chewing is a cyclic motion of the mandible and tongue apparatus, whereby food is reduced between the maxillary and mandibular teeth.
  • The left mandibular fragment contains the roots of five erupted teeth, one erupted tooth crown, and one unerupted tooth.
  • He found this method of mandibular reconstruction to be reliable particularly in irradiated tissue beds.


Pronunciation: /manˈdɪbjʊlət/
Example sentences
  • In addition, we have been studying the orthologous genes in the red flour beetle, which has relatively unspecialized mandibulate mouthparts.
  • Delayed induced effects have been studied almost exclusively with mandibulate insects.
  • Yet the actual morphology of mandibles is very different, a result of distinct mandibulate and haustellate modifications.


Late Middle English: from Old French, or from late Latin mandibula, from mandere 'to chew'.

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