Definition of trilobite in English:


Syllabification: tri·lo·bite
Pronunciation: /ˈtrīləˌbīt


  • An extinct marine arthropod that occurred abundantly during the Paleozoic era, with a carapace over the forepart, and a segmented hind part divided longitudinally into three lobes.
    • Subphylum Trilobita, phylum Arthropoda: numerous classes and orders
    More 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.


mid 19th century: from modern Latin Trilobites, from Greek tri- 'three' + lobos 'lobe' + -ite1.

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elaborate ornamentation of a vocal melody