: 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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Bird's nest ferns are actually much easier to take care of than most indoor ferns. Sophia Beams, Better Homes & Gardens, 14 June 2026 Pair mountain laurels with other shade loving plants with similar needs, like Solomon's seal and native ferns. Lauren Landers, The Spruce, 13 June 2026 While ferns do best with consistently moist soil around their roots, overwatering will cause fronds to yellow and roots to become soggy. Mary Marlowe Leverette, Southern Living, 12 June 2026 In the reception area, amid meandering pools and rock walls sowed with cascading ferns, staff members taught guests how to weave coconut fronds into sun hats and fans. Julie Orringer, Travel + Leisure, 9 June 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 20 Jun. 2026.

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

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