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fibril

/ˈfaɪbɹ(ə)l/noun

fibril is a noun meaning “A fine fibre or filament” (English Wiktionary, September 2026). It is spelled F-I-B-R-I-L, and it appears about once in every 14 million words in written English (wordfreq, 2021 data). The plural of fibril is fibrils.

What does fibril mean?

noun

  1. 1

    A fine fibre or filament.

  2. 2

    Any fine, filamentous structure in animals or plants.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

How do you pronounce fibril?

  • US /ˈfaɪbɹ(ə)l/

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-fibril.wav, Wikimedia Commons (author and licence on each file's page).

Forms of fibril

  • fibrils plural

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

How common is fibril?

Fibril appears about once in every 14 million words in written English, the 114,361st most frequent word form in the list.

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

Fibril in Spanish, French, German and Portuguese

LanguageWords
Frenchfibrille (fine fibre or filament)
GermanFäserchen (fine, filamentous structure in animals or plants)
Spanishfibrilla (fine, filamentous structure in animals or plants)

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.

Where does fibril come from?

Borrowed from Latin fibrilla, diminutive of Latin fibra. Doublet of fibrilla. Compare fibre.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).