trilobite

US/ˈtɹaɪ.ləˌbaɪt/

nounC1Very rare — outside the 30,000 commonest English words, so you will meet it in writing rather than in speechleans written

Other forms: trilobites

A trilobite is a small armoured sea creature of very ancient times. Find a trilobite.

They lasted nearly three hundred million years, far longer than the dinosaurs managed. A trilobite had the first proper eyes known, made of stone lenses that fossilise intact.

Definitions of trilobite

1nountrilobiteA small armoured sea creature of very ancient times.C1
“The trilobite in the slate was the size of a thumbnail.”

trilobite is a creature.

Where it comes from

From Greek treis, three, and lobos, a lobe, from the three parts of its shell.

Translingual
Trilobita
English, today
trilobite

Borrowed from Translingual Trilobita. by surface analysis, tri- + lobe + -ite.

Etymology from Wiktionary, CC BY-SA

Practised in Dinosaurs & Prehistory

Practise this word

trilobite in the wild

Agnostida are an order of extinct arthropods which have classically been seen as a group of highly modified trilobites, though some recent research has doubted this placement.
Agnostida
Because trilobites had wide diversity and an easily fossilized mineralised exoskeleton made of calcite, they left an extensive fossil record.
Trilobite
Trilobites are placed within the clade Artiopoda, which includes many organisms that are morphologically similar to trilobites, but are largely unmineralised.
Trilobite
Redlichiida is an order of trilobites, a group of extinct marine arthropods.
Redlichiida
Species assigned to the order Redlichiida are among the first trilobites to appear in the fossil record, about halfway during the Lower Cambrian.
Redlichiida

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From Wikipedia, CC BY-SA 4.0. These sentences were written by other people about their own subjects; they are here to show the word at work, not as anybody’s opinion.

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