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单词 mandible
释义

Definition of mandible in English:

mandible

noun ˈmandɪb(ə)lˈmændəb(ə)l
Anatomy Zoology
  • 1The jaw or a jawbone, especially the lower jawbone in mammals and fishes.

    〔剖,动〕颌,颚;颚骨(尤指哺乳动物和鱼的下颌骨)

    Example sentencesExamples
    • The human remains comprise one complete mandible, two fragmentary mandibles, and a cranial fragment.
    • The tongue is suspended from the inside of the mandible above the hyoid bone and has muscles with a range of different orientations.
    • Both wolves and spotted hyenas tend to leave the skulls and mandibles of their prey behind, but they often remove entire limbs, especially from the upper exposed side of the carcass.
    • Most use their maxillae and mandibles to take in food.
    • In the mandible, there are four incisors, two canines, four premolars, and six molars.
    Synonyms
    jawbone, lower jaw
    1. 1.1 Either of the upper and lower parts of a bird's beak.
      (鸟)上喙;下喙
      the drake is all black except for an orange mark on the upper mandible
      Example sentencesExamples
      • 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.
      • In addition, bill curvature was measured, taking the radius of the height of the upper mandible from the line traced from the base to the tip of the bill.
      • The young birds' mandibles begin to cross about two weeks after they fledge, and they learn to extract seeds soon after that.
      • The upper mandible of the bill is dark, and the legs are bright orange.
      Synonyms
      bill, nib
    2. 1.2 Either half of the crushing organ in an arthropod's mouthparts.
      (节肢动物的)口器上部(或下部)
      Example sentencesExamples
      • The trap-jaw ant fires its mandibles with such force to propel itself to the front of the pack.
      • Centipedes were measured from the tip of the upper mandible to the posterior end of the last body segment.
      • They crush the honeybees in their mandibles one after another until the bees are all dead.

Derivatives

  • mandibular

  • adjective manˈdɪbjʊləmænˈdɪbjələr
    Anatomy Zoology
    • The above is an example of the airway dilation that can be achieved with mandibular advancement by a dental appliance in properly selected patients.
      Example sentencesExamples
      • He found this method of mandibular reconstruction to be reliable particularly in irradiated tissue beds.
      • 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.
      • Spontaneous mandibular dislocation usually occurs in people with a history of such dislocations.
  • mandibulate

  • adjective manˈdɪbjʊlət
    Anatomy Zoology
    • In addition, we have been studying the orthologous genes in the red flour beetle, which has relatively unspecialized mandibulate mouthparts.
      Example sentencesExamples
      • In mandibulate development, which is considered to be the ancestral form, the labial and maxillary appendages develop along similar if not identical paths producing articulated appendages.
      • Yet the actual morphology of mandibles is very different, a result of distinct mandibulate and haustellate modifications.
      • Delayed induced effects have been studied almost exclusively with mandibulate insects.
      • Insects are mandibulate, not chelicerate arthropods, like spiders.

Origin

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

Definition of mandible in US English:

mandible

nounˈmandəb(ə)lˈmændəb(ə)l
Anatomy Zoology
  • 1The jaw or a jawbone, especially the lower jawbone in mammals and fishes.

    〔剖,动〕颌,颚;颚骨(尤指哺乳动物和鱼的下颌骨)

    Example sentencesExamples
    • In the mandible, there are four incisors, two canines, four premolars, and six molars.
    • The human remains comprise one complete mandible, two fragmentary mandibles, and a cranial fragment.
    • Both wolves and spotted hyenas tend to leave the skulls and mandibles of their prey behind, but they often remove entire limbs, especially from the upper exposed side of the carcass.
    • The tongue is suspended from the inside of the mandible above the hyoid bone and has muscles with a range of different orientations.
    • Most use their maxillae and mandibles to take in food.
    Synonyms
    jawbone, lower jaw
    1. 1.1 Either of the upper and lower parts of a bird's beak.
      (鸟)上喙;下喙
      the drake is all black except for an orange mark on the upper mandible
      Example sentencesExamples
      • The bill is a pinkish horn color and dark markings appear on the upper mandible.
      • The young birds' mandibles begin to cross about two weeks after they fledge, and they learn to extract seeds soon after that.
      • Breeding adults have a laterally flattened horn on the upper mandible.
      • The upper mandible of the bill is dark, and the legs are bright orange.
      • In addition, bill curvature was measured, taking the radius of the height of the upper mandible from the line traced from the base to the tip of the bill.
      Synonyms
      bill, nib
    2. 1.2 Either half of the crushing organ in an arthropod's mouthparts.
      (节肢动物的)口器上部(或下部)
      Example sentencesExamples
      • The trap-jaw ant fires its mandibles with such force to propel itself to the front of the pack.
      • 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.

Origin

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

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更新时间:2024/11/11 12:14:55