plural noun
Pri·​mo·​fil·​i·​ces | \ ˌprī(ˌ)mōˈfiləˌsēz \

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!

History and Etymology for Primofilices

New Latin, from Latin primo + New Latin Filices

Keep scrolling for more

Learn More About Primofilices

Dictionary Entries Near Primofilices

Primo de Rivera y Orbaneja



See More Nearby Entries 

Statistics for Primofilices

Cite this Entry

“Primofilices.” Dictionary, Merriam-Webster, Accessed 28 Sep. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon


Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!