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词汇 lophodont
释义

Definition of lophodont in English:

lophodont

adjectiveˈləʊfə(ʊ)dɒntˈlɒfə(ʊ)dɒntˈläfəˌdänt
Zoology
  • 1(of molar teeth) having transverse ridges on the grinding surfaces, characteristic of some ungulates.

    〔动〕(臼齿)脊型齿的,脊齿型的

    Example sentencesExamples
    • Lophodont teeth have elongated ridges called lophs that run between cusps.
    • The morphology of its lophodont molars indicates that Karagalax is a tapiromorph, and it is here included in the primitive family Isectolophidae.
    • The molars of macropodids are hypsodont, quadritubercular, and either selenodont or lophodont or a combination of the two forms.
    • Thus they tend to revert to the trigonid form, but without cusps, so that the work is done by curved ridges: lophodont dentition.
    1. 1.1 (of an ungulate) having lophodont teeth.
      (有蹄类动物)有脊型齿的
      Example sentencesExamples
      • Modern species are lophodont (complexly so in equids), in contrast to artiodactyls, which tend to be selenodont or bunodont.
      • Bulungamayine kangaroos are thus rival candidates for the role of ancestors of modern, lophodont kangaroos.
nounˈləʊfə(ʊ)dɒntˈlɒfə(ʊ)dɒnt
  • An animal with lophodont teeth.

Origin

Late 19th century: from lopho- 'crest' + Greek odous, odont- 'tooth'.

Definition of lophodont in US English:

lophodont

adjectiveˈläfəˌdänt
Zoology
  • 1(of molar teeth) having transverse ridges on the grinding surfaces, characteristic of some ungulates.

    〔动〕(臼齿)脊型齿的,脊齿型的

    Example sentencesExamples
    • The molars of macropodids are hypsodont, quadritubercular, and either selenodont or lophodont or a combination of the two forms.
    • Thus they tend to revert to the trigonid form, but without cusps, so that the work is done by curved ridges: lophodont dentition.
    • The morphology of its lophodont molars indicates that Karagalax is a tapiromorph, and it is here included in the primitive family Isectolophidae.
    • Lophodont teeth have elongated ridges called lophs that run between cusps.
    1. 1.1 (of an ungulate) having teeth with transverse ridges on the grinding surfaces.
      Example sentencesExamples
      • Modern species are lophodont (complexly so in equids), in contrast to artiodactyls, which tend to be selenodont or bunodont.
      • Bulungamayine kangaroos are thus rival candidates for the role of ancestors of modern, lophodont kangaroos.

Origin

Late 19th century: from lopho- ‘crest’ + Greek odous, odont- ‘tooth’.

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