A term used in risk assessment. An exposure level at which there are no statistically or biologically significant difference or severity of ant effect between an exposed population and a comparable non-exposed population.
NO-OBSERVED-EFFECT-LEVEL (NOEL)
Meaning of NO-OBSERVED-EFFECT-LEVEL (NOEL) in English
Environmental engineering English vocabulary. Английский словарь экологического инжиниринга. 2012