🐚 A sea mollusk 📿 A shell ornament

dentalium

9.9

A small sea animal with a long, curved tube-shaped shell

noun
/dɛnˈteɪliəm/

Specialized

: dentalio

The museum displayed a collection of dentalium shells found along the Pacific coast.

Examples

A single dentalium shell can be easily recognized by its smooth, curved tube shape.
The dentalium is often found on sandy ocean floors.
Indigenous peoples once used dentalium as jewelry and a form of currency.
Many Indigenous cultures used dentalium as currency.
The museum displayed a collection of dentalium shells found along the Pacific coast.
A single dentalium shell can be easily recognized by its smooth, curved tube shape.
Indigenous peoples once used dentalium as jewelry and a form of currency.

Synonyms

tusk shell

vsdentalium

Specialized

9.9

A small sea animal with a long tube-shaped shell open at both ends

is the scientific term for the same type of marine mollusk

tooth shell

vsdentalium

Specialized

9.9

A sea animal that has a long thin shell open at both ends and a foot for digging in sand

focuses on the shell shape not the burrowing foot

Scaphopoda

vsdentalium

Specialized

9.9

Sea animals with long shells like small tusks that live in sand

is a single type within that broader class of mollusks

Surface Forms

dentalium singular

dentalia plural

Morphology

dentalium = dental (opaque) = dental + ium

Although the element 'dental' ('relating to teeth') is recognizable, the overall meaning 'a tusk shell' is a taxonomic borrowing with the non‑productive suffix '-ium' and is not derivable by standard English morphology.

Etymology

Dentalium comes from the Latin root dent- meaning 'tooth', because the shell looks like a long tooth or tusk. The same root appears in dentist and dental, so thinking of a 'tooth-like' shell helps you remember this marine mollusk.