What's Trending Now
More Trending Words
Endoceras
noun
En·doc·er·as
\enˈdäsərəs\
Definition of Endoceras
: a genus (the type of the family Endoceratidae) of Ordovician and Silurian nautiloid cephalopods with a straight shell having a very large siphuncle and endocones and reaching a length of 12 feet
endoceratid
\¦endō¦serətə̇d\ adjective or nounExplore Merriam-Webster
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 endoceras
New Latin, from end- + -ceras
Seen and Heard
What made you want to look up Endoceras? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!