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formyl

/ˈfɔː(ɹ)mɪl/noun

formyl is a noun meaning “The univalent radical -CHO, derived from formaldehyde, that is characteristic of aldehydes” (English Wiktionary, September 2026). It is spelled F-O-R-M-Y-L, and it appears about once in every 24 million words in written English (wordfreq, 2021 data). The plural of formyl is formyls.

What does formyl mean?

noun

  1. 1

    The univalent radical -CHO, derived from formaldehyde, that is characteristic of aldehydes

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

How do you pronounce formyl?

  • /ˈfɔː(ɹ)mɪl/
  • /ˈfɔː(ɹ)maɪl/

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-formyl.wav, LL-Q1860_(eng)-Vealhurl-formyl2.wav, Wikimedia Commons (author and licence on each file's page).

Forms of formyl

  • formyls plural

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

How common is formyl?

Formyl appears about once in every 24 million words in written English, the 148,541st 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).

Formyl in Spanish, French, German and Portuguese

In the sense -CHO:

LanguageWords
Frenchformyle

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.