noun🔗ShareTrilobitesAn extinct arthropod of the class Trilobita, whose body had three large lobes."During our class field trip to the museum, we saw fossils of trilobites, ancient sea creatures easily identified by the three distinct lobes running lengthwise down their bodies. "Durante nuestra excursión escolar al museo, vimos fósiles de trilobites, antiguas criaturas marinas fácilmente identificables por los tres lóbulos distintos que recorren longitudinalmente sus cuerpos.geologyarchaeologyanimalbiologysciencehistoryorganismChat with AIVocabulary GamePractice Reading