Definition of fern
: any of a division (Filicophyta) or class (Filicopsida) of flowerless spore-producing vascular plants having alternating sporophyte and gametophyte generations
especially
: any of an order (Filicales) of homosporous plants possessing roots, stems, and leaflike fronds — compare seed fern
Keep scrolling for more
Keep scrolling for more
Keep scrolling for more
Test Your Vocabulary
More Confusing Words—Quiz
-
- The magician
______
moved the selected card to the top of the deck.

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Spell words. Make bears.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Share fern
Time Traveler for fern
The first known use of fern was before the 12th century
See more words from the same century