: the shell of a marine animal and especially a mollusk

Examples of seashell in a Sentence

Recent Examples on the Web
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Overlooking the bay of Porto Rafael, an area on the island’s northern coast famous for its remote location and its scenic beauty, the house resembles a seashell. — Francesca Longoni, Architectural Digest, 30 Oct. 2026 The second prosecution, which is still pending, accuses him of threatening the president in a photo of seashells posted on social media. — Nate Perez, NPR, 26 Oct. 2026 In the alkaline stream, calcium in the seawater converts CO₂ into calcium carbonate, the durable compound seashells are made of. — Alec Luhn, Scientific American, 20 Oct. 2026 The signature restaurant, Le Pressoir d’Argent, is a stunner with a rocaille decor (seashells set into elaborate plaster moldings) and a sublime seafood menu. — Condé Nast, Condé Nast Traveler, 11 Oct. 2026 See All Example Sentences for seashell

Word History

First Known Use

before the 12th century, in the meaning defined above

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

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Cite this Entry

“Seashell.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seashell. Accessed 1 Nov. 2026.

Kids Definition

: the shell of a marine animal and especially a mollusk

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