exotoxin
noun
exotoxin is a noun meaning “Any toxin secreted by a microorganism into the surrounding environment” (English Wiktionary, September 2026). It is spelled E-X-O-T-O-X-I-N, and it appears about once in every 68 million words in written English (wordfreq, 2021 data). The plural of exotoxin is exotoxins.
What does exotoxin mean?
noun
- 1
Any toxin secreted by a microorganism into the surrounding environment.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of exotoxin
- exotoxins plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is exotoxin?
Exotoxin appears about once in every 68 million words in written English, the 258,950th 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).
Exotoxin in Spanish, French, German and Portuguese
In the sense any toxin secreted by a microorganism into surrounding environment:
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.