What's Trending Now
More Trending Words
protoconch
noun
pro·to·conch
\ˈprōtə+ˌ-\
Definition of protoconch
1 : the embryonic shell of a mollusk (as a univalve)
2 : the apical chamber or whorl of an ammonite or gastropod
protoconchal
adjectiveExplore M-W
There's more!
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 protoconch
International Scientific Vocabulary prot- + conch
Seen and Heard
What made you want to look up protoconch? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!