Definition of stomium
1 : the thin-walled cells of the annulus marking the line or region of dehiscence of a fern sporangium
2 : the opening in an anther usually between lip cells through which dehiscence occurs
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 stomium
New Latin, from Greek stomion mouth
Seen and Heard
What made you want to look up stomium? Please tell us where you read or heard it (including the quote, if possible).