Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of trilobita is as below...

Trilobite :: Trilobite (n.) Any one of numerous species of extinct arthropods belonging to the order Trilobita. Trilobites were very common in the Silurian and Devonian periods, but became extinct at the close of the Paleozoic. So named from the three lobes usually seen on each segment..

Trilobita :: Trilobita (n. pl.) An extinct order of arthropods comprising the trilobites.

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