Definition of Molasse
: a series of fossiliferous sedimentary deposits in and near Switzerland that are chiefly of Miocene age but include some Upper Oligocene beds
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 molasse
French, perhaps alteration of mollasse soft, from mou (after Italian mollaccio soft: molle soft, from Latin mollis), from Latin mollis
Seen and Heard
What made you want to look up Molasse? Please tell us where you read or heard it (including the quote, if possible).