janthina
noun
jan·thi·na
ˈjan(t) thənə
1
capitalized : the type genus of Janthinidae comprising pelagic snails of warm seas that have a thin spiral purple shell, a large head, and protrusible gills
2
plural -s : any snail of the genus Janthina
Word History
Etymology
New Latin, from Latin ianthina, feminine of ianthinus violet-blue, from Greek ianthinos, from ion violet + anthos flower