aril

noun

ar·​il ˈa-rəl How to pronounce aril (audio)
ˈer-əl
: an exterior covering or appendage of some seeds (as of the yew) that develops after fertilization as an outgrowth from the ovule stalk
arillate
ˈa-rə-ˌlāt How to pronounce aril (audio)
ˈer-ə-
adjective

Examples of aril in a Sentence

Recent Examples on the Web
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Try stewed rhubarb in the spring, a mix of sweet and tart cherries in the summer, cranberries or pomegranate arils in the fall, and ripe persimmons, and citrus supremes in the winter. Riley Wofford, Martha Stewart, 26 Jan. 2026 The seeds, called arils, are full of vitamin C and potassium. Mary Ann Esposito, Boston Herald, 7 Jan. 2026 How To Store Pomegranates For containers of arils purchased at the grocery store, refer to the use-by date on the package. Stacey Lastoe, Southern Living, 3 Jan. 2026 Pomegranate seeds, also known as arils, arils, are packed with polyphenols and flavonoids, including anthocyanins, ellagitannins and organic acids that have powerful antioxidant and anti-inflammatory activity. Jillian Kubala, Health, 6 Nov. 2025 See All Example Sentences for aril

Word History

Etymology

borrowed from New Latin arillus, going back to Medieval Latin, "grape seed," borrowed from a central or southern Italian dialectal form (as Lazio dialect [Subiaco] aríłu "grape seed," 16th-century Sicilian arillu), going back to Vulgar Latin *arīllus, of obscure origin

Note: See Lessico etimologico italiano, vol. 3, columns 1151-55. The inclusion of arillus in the Corpus Glossariorum Latinorum (and hence the Thesaurus Linguae Latinae) is misleading, as the marginal note in the manuscript that uses the word (Biblioteca Ambrosiana C 243) is later than the manuscript itself (10th-llth centuries)—hence a Late Latin date for the word is not supportable, and the Medieval Latin instances (see Mittellateinisches Wörterbuch, Dictionary of Medieval Latin from British Sources) are clearly latinizations of a vernacular word. Judging by the medieval attestation in glossaries and in works of both a medical and botanical nature, the Lessico suggests that the word may have first circulated in the Salerno school of medicine (Schola Medica Salernitana). Such a source corresponds well with the range of its outcomes in Romance, limited to Italian dialects from Lazio and Abruzzi south through Sicily. The date at which arillus became a technical botanical term is uncertain. It was familiar to Linnaeus, who uses it in a somewhat more general sense: "tunica propria exterior seminis, sponte secedens" ("the exterior coat of the seed proper, dropping off of its own accord") (Philosophia botanica [Stockholm, 1751], p. 54).

First Known Use

1794, in the meaning defined above

Time Traveler
The first known use of aril was in 1794

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Cite this Entry

“Aril.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aril. Accessed 14 Feb. 2026.

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