Definition of Primofilices
in some classifications
: a subclass of Filicineae comprising fossil forms with the axis usually protostelic, the fronds but slightly developed, terminal or subterminal sporangia, and usually isospores and including the order Coenopteridales and sometimes other forms of somewhat uncertain relationships
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 primofilices
New Latin, from Latin primo + New Latin Filices
Seen and Heard
What made you want to look up Primofilices? Please tell us where you read or heard it (including the quote, if possible).