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trilobite

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noun tri·lo·bite \ˈtrī-lə-ˌbīt\

Definition of trilobite

  1. :  any of numerous extinct Paleozoic marine arthropods (group Trilobita) having the segments of the body divided by furrows on the dorsal surface into three lobes



Illustration of trilobite

Origin of trilobite

ultimately from Greek trilobos three-lobed, from tri- + lobos lobe


First Known Use: 1832


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