: any of a division (Polypodiophyta) or class (Polypodiopsida) of flowerless spore-producing vascular plants having alternating sporophyte and gametophyte generations
especially : any of an order (Polypodiales) of homosporous plants possessing roots, stems, and leaflike fronds compare seed fern
fernlike adjective
ferny adjective

Examples of fern in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Deep to partial shade Soil Type: Rich in organic matter Soil pH: Acidic to neutral Bramble Fern An easy-to-grow fern, a bramble fern can grow 3 to 8 feet tall and up to 5 feet wide. Mary Marlowe Leverette, Southern Living, 4 June 2025 These activities, often held in collaboration with local artisans, range from foraging edible ferns and making soba noodles to visiting a soy brewery and attending a tea ceremony. Elena Valeriote, AFAR Media, 3 June 2025 Researchers at the University of Tennessee zoomed in on the fern’s reproductive strategies and found that ferns retain two distinct modes of reproduction. Jay Kakade may 12, New Atlas, 12 May 2025 In keeping with the calm, relaxation vibe, our last stop was Secret Spot (that’s the actual name!), where guests could soak in their own private cedar hot tub outdoors, surrounded by thick ferns and overlooking Whakarewarewa Forest and Puarenga Stream. Lois Alter Mark, Forbes, 12 Mar. 2025 See All Example Sentences for fern

Word History

Etymology

Middle English, from Old English fearn; akin to Old High German farn fern, Sanskrit parṇa wing, leaf

First Known Use

before the 12th century, in the meaning defined above

Time Traveler
The first known use of fern was before the 12th century

Browse Nearby Words

Cite this Entry

“Fern.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fern. Accessed 17 Jun. 2025.

Kids Definition

fern

noun
: any of an order of vascular plants resembling seed plants in having root, stem, and leaflike fronds but reproducing by spores instead of by flowers and seeds
fernlike adjective
ferny adjective

More from Merriam-Webster on fern

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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