NOAEL
noun
NOAEL is a noun meaning “No-observed-adverse-effect level, the highest level of exposure to a substance at which there are no adverse effects on test subjects” (English Wiktionary, September 2026). It is spelled N-O-A-E-L, and it appears about once in every 87 million words in written English (wordfreq, 2021 data). The plural of NOAEL is NOAELs.
What does NOAEL mean?
noun
- 1
No-observed-adverse-effect level, the highest level of exposure to a substance at which there are no adverse effects on test subjects.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of NOAEL
- NOAELs plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is NOAEL?
NOAEL appears about once in every 87 million words in written English, the 297,763rd 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).