EXAMPLES | WORD ORIGIN 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 of trilobite 1825–35;
New Latin Trilobites
, equivalent to
) three-lobed (see
-ītēs -ite 1 Related forms tri·lo·bit·ic , [trahy-l uh- bit-ik] /ˌtraɪ ləˈbɪt ɪk/ adjective
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for trilobite Historical Examples of trilobite British Dictionary definitions for trilobite noun any extinct marine arthropod of the group Trilobita, abundant in Palaeozoic times, having a segmented exoskeleton divided into three parts Derived Forms trilobitic ( ˌtraɪləˈbɪtɪk), adjective Word Origin for trilobite
C19: from New Latin
Trilobītēs, from Greek trilobos having three lobes; see tri-, lobe
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for trilobite n.
extinct marine arthropod, 1832, from Modern Latin
Trilobites (Walch, 1771), from Greek tri- "three" (see three) + lobos "lobe" (see lobe); so called because its body is divided into three lobes.
Online Etymology Dictionary, © 2010 Douglas Harper
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
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