Definition of belemnite
: any of various extinct cephalopods (order Belemnoidea) that had large often bullet-shaped internal shells and were especially abundant in the Mesozoic era
Origin of belemnite
New Latin belemnites, from Greek belemnon dart; akin to Greek ballein to throw — more at devil
First Known Use: 1646
Learn More about belemnite
Britannica.com: Encyclopedia article about "belemnite"
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