trilobite

tri·lo·bite  (trl-bt)

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.

---

[New Latin Trilobts, former class name, from Greek trilobos, three-lobed : tri-, tri- + lobos, lobe.]

---

trilo·bitic (-btk) adj.

---

trilobite [ˈtraɪləˌbaɪt]

n

(Earth Sciences / Palaeontology) any extinct marine arthropod of the group Trilobita, abundant in Palaeozoic times, having a segmented exoskeleton divided into three parts

[from New Latin Trilobītēs, from Greek trilobos having three lobes; see tri-, lobe]

trilobitic  [ˌtraɪləˈbɪtɪk] adj

---

trilobite  (trl-bt)

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.

Thesaurus

Noun

1.

trilobite - an extinct arthropod that was abundant in Paleozoic times; had an exoskeleton divided into three parts arthropod - invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin