dentalium

noun
den·​ta·​li·​um | \den-ˈtā-lē-əm \
plural dentalia\-​lē-​ə \

Definition of dentalium 

: any of a genus (Dentalium) of widely distributed tooth shells broadly : tooth shell

First Known Use of dentalium

1847, in the meaning defined above

History and Etymology for dentalium

New Latin, genus name, from Latin dentalis

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The first known use of dentalium was in 1847

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