Definition of janthina
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
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of janthina
New Latin, from Latin ianthina, feminine of ianthinus violet-blue, from Greek ianthinos, from ion violet + anthos flower
Seen and Heard
What made you want to look up janthina? Please tell us where you read or heard it (including the quote, if possible).