SINCE 1828
Argonauta
noun
Ar·go·nau·ta
Definition of Argonauta
: a genus of cephalopods (order Dibranchia) including a single recent form, the paper nautilus (A. argos), related to the octopus and like it having eight arms two of which in the female are expanded at the tips to clasp the thin fragile unchambered shell — compare nautilus
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Merriam-Webster unabridged
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