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agenesis

/eɪˈd͡ʒɛnəsɪs/noun

agenesis is a noun meaning “Any imperfect development of the body, or any anomaly of organization” (English Wiktionary, September 2026). It is spelled A-G-E-N-E-S-I-S, and it appears about once in every 13 million words in written English (wordfreq, 2021 data). The plural of agenesis is ageneses.

What does agenesis mean?

noun

  1. 1

    Any imperfect development of the body, or any anomaly of organization

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

How do you pronounce agenesis?

  • /eɪˈd͡ʒɛnəsɪs/

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

Forms of agenesis

  • ageneses plural

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

How common is agenesis?

Agenesis appears about once in every 13 million words in written English, the 110,368th 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).

Agenesis in Spanish, French, German and Portuguese

In the sense imperfect development of the body:

LanguageWords
Frenchagénésie
Portugueseagenesia
Spanishagenesia

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 agenesis come from?

From a- + -genesis.

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