noun. an extinct arthropod that was abundant in Paleozoic times; had an exoskeleton divided into three parts.
- -ite (English)
- lobe (English)
- lobe (French)
- tri- (English)
Sentences with trilobite
If your fossil doesn't have a shell-like shape at all it might be a trilobite – these organisms look a bit like bugs.
2. Noun, singular or mass
Oklahoma is best know for its abundance of trilobite fossils.