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词汇 ossicle
释义

Definition of ossicle in English:

ossicle

noun ˈɒsɪk(ə)lˈɑsək(ə)l
Anatomy Zoology
  • 1A very small bone, especially one of those in the middle ear.

    〔剖,动〕小骨(尤指听小骨)

    Example sentencesExamples
    • Sutural bones are usually small, irregularly shaped ossicles, often found in the sutures of the cranium, especially in the parietal bones.
    • The middle ear ossicles and tympanic membrane remained intact, so sound stimulation could be applied to the preparation through a loudspeaker connected to the external ear canal.
    • Vibrations of the eardrum are then coupled by the middle ear ossicles, the three smallest bones in the body, to the fluid-filled cochlea.
    • Sound waves reaching the tympanic membrane will initiate vibrations that are transmitted through the bony ossicles of the middle ear to the oval window.
    • Internally, the mastoid is hollowed out to form the epitympanic recess to accommodate the ossicles of the middle ear.
    1. 1.1 A small piece of calcified material forming part of the skeleton of an invertebrate animal such as an echinoderm.
      〔动〕小骨片
      Example sentencesExamples
      • The position of these plates on the non-rudiment side of the larva suggests that ossicles occurring on the aboral surface are extraxial.
      • The calcitic ossicles of crinoids, as is typical of echinoderms, form an internal skeleton that provides support and protection.
      • As they grow, asteroids add new ossicles and increase size of existing ossicles.
      • Calcareous ossicles make up the internal skeleton.
      • Most such particles are echinoderm stem ossicles, brachiopods, bryozoans or other corals.

Origin

Late 16th century: from Latin ossiculum, diminutive of os 'bone'.

Definition of ossicle in US English:

ossicle

nounˈɑsək(ə)lˈäsək(ə)l
Anatomy Zoology
  • 1A very small bone, especially one of those in the middle ear.

    〔剖,动〕小骨(尤指听小骨)

    Example sentencesExamples
    • Internally, the mastoid is hollowed out to form the epitympanic recess to accommodate the ossicles of the middle ear.
    • Sutural bones are usually small, irregularly shaped ossicles, often found in the sutures of the cranium, especially in the parietal bones.
    • The middle ear ossicles and tympanic membrane remained intact, so sound stimulation could be applied to the preparation through a loudspeaker connected to the external ear canal.
    • Sound waves reaching the tympanic membrane will initiate vibrations that are transmitted through the bony ossicles of the middle ear to the oval window.
    • Vibrations of the eardrum are then coupled by the middle ear ossicles, the three smallest bones in the body, to the fluid-filled cochlea.
    1. 1.1 A small piece of calcified material forming part of the skeleton of an invertebrate animal such as an echinoderm.
      〔动〕小骨片
      Example sentencesExamples
      • Most such particles are echinoderm stem ossicles, brachiopods, bryozoans or other corals.
      • The position of these plates on the non-rudiment side of the larva suggests that ossicles occurring on the aboral surface are extraxial.
      • As they grow, asteroids add new ossicles and increase size of existing ossicles.
      • Calcareous ossicles make up the internal skeleton.
      • The calcitic ossicles of crinoids, as is typical of echinoderms, form an internal skeleton that provides support and protection.

Origin

Late 16th century: from Latin ossiculum, diminutive of os ‘bone’.

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