Bret·​ta·​no·​my·​ces | \ ˈbretᵊnōˈmīˌsēz \

Definition of Brettanomyces

: a genus of molds (family Moniliaceae) that are sometimes included in the genus Candida, are active in the secondary fermentation of beers, and are responsible for some cases of beer spoilage

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!

History and Etymology for Brettanomyces

New Latin, from Greek Brettanos, Bretanos Briton (of Celtic origin; akin to Welsh Brython Briton) + New Latin -myces

Keep scrolling for more

Learn More about Brettanomyces

Statistics for Brettanomyces

Cite this Entry

“Brettanomyces.” Dictionary, Merriam-Webster, Accessed 24 Sep. 2020.

Comments on Brettanomyces

What made you want to look up Brettanomyces? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

Homophone Quiz

  • three bears two of them look like theyre whispering to a third bear who looks chuffed to be the center of attention
  • In order to judge how people felt, the senator's office hired a firm to take a ______.
Spell It

Can you spell these 10 commonly misspelled words?

Add Diction

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!