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English definition of “trilobite”

trilobite

noun [C] uk   /ˈtraɪ.lə.baɪt/ us    /-loʊ-/ specialized
a simple, flat sea creature that lived in the earliest period of life on Earth, with a hard outer layer and a body in three partsSea creaturesSea fish
(Definition of trilobite from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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