Astraeospongia
noun
As·traeo·spon·gia
\¦astrē(ˌ)ōˈspənjēə, -pän-\
Definition of Astraeospongia
: a genus of saucer-shaped Silurian fossil sponges having 6-rayed stellate spicules and important as Paleozoic index fossils
Read the Latest from 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 astraeospongia
New Latin, from astraeo- (from Greek astraios starry, from aster-, astēr star) + -spongia — more at star
Seen and Heard
What made you want to look up Astraeospongia? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!