trilobite

[trahy-luh-bahyt]
noun
any marine arthropod of the extinct class Trilobita, from the Paleozoic Era, having a flattened, oval body varying in length from 1 inch (2.5 cm) or less to 2 feet (61 cm).

Origin:
1825–35; < Neo-Latin Trilobites, equivalent to Greek trílob(os) three-lobed (see tri-, lobe) + -ītēs -ite1

trilobitic [trahy-luh-bit-ik] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To trilobite
Collins
World English Dictionary
trilobite (ˈtraɪləˌbaɪt)
 
n
any extinct marine arthropod of the group Trilobita, abundant in Palaeozoic times, having a segmented exoskeleton divided into three parts
 
[C19: from New Latin Trilobītēs, from Greek trilobos having three lobes; see tri-, lobe]
 
trilobitic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History

trilobite
extinct marine arthropod, 1832, from Mod.L. Trilobites (Walch, 1771), from Gk. tri- "three" + lobos "lobe," so called because its body is divided into three lobes.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Science Dictionary
trilobite   (trī'lə-bīt')  Pronunciation Key 
Any of numerous extinct and mostly small arthropods of the subphylum Trilobita that lived during the Paleozoic Era and are extremely common as fossils. Trilobites had a hard outer covering divided into three lengthwise and three widthwise sections. Their heads had two prominent compound eyes similar in structure to those of modern insects.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences
Caudal fin round or trilobite, often with a single upper ray elongated in adults.
Contains algal domes and rare trilobite and gastropod remains.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature