Definition of bitterling
: a small European cyprinid fish (Rhodeus amarus) introduced and locally common about New York that is much used in bioassay of mammalian hormones — see bitterling test japanese bitterling
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 bitterling
German, from bitter (from Old High German bittar) + -ling
Seen and Heard
What made you want to look up bitterling? Please tell us where you read or heard it (including the quote, if possible).