What does no-observed-adverse-effect level mean?

Definitions for no-observed-adverse-effect level

Here are all the possible meanings and translations of the word no-observed-adverse-effect level.

U.S. National Library of Medicine

  1. No-Observed-Adverse-Effect Level

    The highest dosage administered that does not produce toxic effects. The NOAEL will depend on how closely dosages are spaced (lowest-observed-adverse-effect level and no-observed-effect level) and the number of animals examined. The ultimate objective is usually to determine not the "safe" dosage in laboratory animals but the "safe" dosage for humans. Therefore, the extrapolation most often required of toxicologists is from high-dosage studies in laboratory animals to low doses in humans. (Casarett and Doull's Toxicology: The Basic Science of Poisons, 4th ed)


  1. Chaldean Numerology

    The numerical value of no-observed-adverse-effect level in Chaldean Numerology is: 1

  2. Pythagorean Numerology

    The numerical value of no-observed-adverse-effect level in Pythagorean Numerology is: 6

Images & Illustrations of no-observed-adverse-effect level

  1. no-observed-adverse-effect level


Find a translation for the no-observed-adverse-effect level definition in other languages:

Select another language:

Discuss these no-observed-adverse-effect level definitions with the community:

Word of the Day

Would you like us to send you a FREE new word definition delivered to your inbox daily?

Please enter your email address:     


Use the citation below to add this definition to your bibliography:


"no-observed-adverse-effect level." Definitions.net. STANDS4 LLC, 2018. Web. 17 Mar. 2018. <https://www.definitions.net/definition/no-observed-adverse-effect level>.

Are we missing a good definition for no-observed-adverse-effect level? Don't keep it to yourself...

Nearby & related entries:

Alternative searches for no-observed-adverse-effect level:

Thanks for your vote! We truly appreciate your support.