: 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
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Some really easy to grow evergreen ferns are Autumn Fern and Holly Fern. Steve Bender, Southern Living, 3 May 2025 One is an alcohol-free citrus floral scent; another features notes of ferns and geraniums. James Barron, New York Times, 1 May 2025 The exterior carries a breezy, coastal joint feel, with large ferns swaying from the patio ceiling and wicker chairs. Sunny Hubler, Charlotte Observer, 22 Apr. 2025 Trees, ferns, and moss grew so thick that in many places the sun rarely touched the ground. Ben East, Outdoor Life, 14 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 12 May. 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

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