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Trilobite

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The American Heritage® Dictionary of the English Language, 4th Edition

n. Any of numerous extinct marine arthropods of the class Trilobita, of the Paleozoic Era, having a segmented body divided by grooves into three vertical lobes and found as fossils throughout the world.

Wiktionary, Creative Commons Attribution/Share-Alike License

n. An extinct arthropod of the class Trilobita, whose body had three large lobes.

the GNU version of the Collaborative International Dictionary of English

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.

The Century Dictionary and Cyclopedia

n. Any member of the Trilobita: so called from the three lobes or main divisions of the body—cephalic, thoracic, and abdominal. See Trilobita.

WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

n. an extinct arthropod that was abundant in Paleozoic times; had an exoskeleton divided into three parts

Word Usage

"A trilobite is a tri-lobed water bugessentially from the prehistoric age, one of the first life forms of it's kind, and a cornerstone of anyone's fossil collection."

Hypernym

Words that are more generic or abstract

arthropod

Cross Reference

dudley trilobite

Same Context

Words that are found in similar contexts

Silurian lording monogastric ammonite spacefaring