trilobite

trilobite
[ˈtrʌɪlə(ʊ)bʌɪt, ˈtrɪ-]
noun
  1. a fossil marine arthropod that occurred abundantly during the Palaeozoic era, with a carapace over the forepart, and a segmented hindpart divided longitudinally into three lobes
    三叶虫
  2. Subphylum Trilobita, phylum Arthropoda: numerous classes and orders
    三叶虫亚门,节肢动物门:众多纲和目
语源
  1. mid 19th cent.: from modern Latin Trilobites, from Greek tri- 'three' + lobos 'lobe'
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