Definition of trilobite in English:

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trilobite

Pronunciation: /ˈtrʌɪlə(ʊ)bʌɪt/
/ˈtrɪlə(ʊ)bʌɪt/

noun

A fossil marine arthropod that occurred abundantly during the Palaeozoic era, with a carapace over the forepart, and a segmented hind part divided longitudinally into three lobes.
Example sentences
  • These fossils include graptolites, trilobites, and various types of microfossils visible only under the microscope.
  • Clearly visible within the imprint were the remains of trilobites, extinct marine arthropods.
  • But in fact, there are very distinct patterns found in the fossil record of trilobites.

Origin

Mid 19th century: from modern Latin Trilobites, from Greek tri- 'three' + lobos 'lobe'.

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