Definition of petromyzon
1 capitalized : a genus (the type of the family Petromyzontidae) of cyclostomes comprising the typical lampreys
2 plural -s : any cyclostome of the genus Petromyzon
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.
Join MWU now and get access to America’s largest dictionary, with:
- 300,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of petromyzon
New Latin Petromyzont-, Petromyzon, from petr- + -myzont-, -myzon -myzon
Seen and Heard
What made you want to look up petromyzon? Please tell us where you read or heard it (including the quote, if possible).