trilobite
tri·lo·bite
noun \ˈtrī-lə-ˌbīt\Definition of TRILOBITE
: 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
See Illustration of TRILOBITE
Origin of TRILOBITE
ultimately from Greek trilobos three-lobed, from tri- + lobos lobe
First Known Use: 1832
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