: 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

Examples of fern in a Sentence

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It was designed by a resident artist and is set under pine trees and ferns on the clear water. Condé Nast, Condé Nast Traveler, 9 Sep. 2026 Lush forests of giant club mosses and ferns produced bountiful quantities of organic matter. Literary Hub, 9 Sep. 2026 Buying these ferns is like paying $20 to watch something die in slow motion. Clarence Schmidt, San Diego Union-Tribune, 7 Sep. 2026 After meeting at a society reception, Henry sets out to marry Henrietta, an endearingly clumsy, overly apologetic botanist with ambitions of discovering a new species of fern. Air Mail, 5 Sep. 2026 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

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Cite this Entry

“Fern.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fern. Accessed 22 Sep. 2026.

Kids Definition

: 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

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