Chronic toxicity definition

Chronic toxicity means an adverse effect that is irreversible or progressive or occurs because the rate of injury is greater than the rate of repair during prolonged exposure to a pollutant. This includes low level, long-term effects such as reduction in growth or reproduction.
Chronic toxicity means concurrent and delayed adverse effects that occur only as a result of a chronic exposure.
Chronic toxicity means toxicity involving a stimulus that lingers or continues for a relatively long period relative to the life span of an organism. Chronic effects include, but are not limited to, lethality, growth impairment, behavioral modifications, disease and reduced reproduction.

Examples of Chronic toxicity in a sentence

Chronic toxicity and carcinogenicity of dietary adminstered ammonium sulfate in F344 rats.

Exposure time: 96 hToxicity to aquatic invertebratesEC50 (Daphnia magna (Water flea)) > 3,2 mg/l Exposure time: 48 h Chronic toxicity to aquatic invertebratesNOEC (Daphnia (water flea)): 0,0992 mg/l Exposure time: 21 d The value mentioned relates to the active ingredient pencycuron.

Johnson, K.A., Gorzinski, S.J., Bodner, K.M., Campbell, R.A., Wolf, C.H., Friedman, M.A., and Mast, R.W., (1986), Chronic toxicity and oncogenicity study on acrylamide incorporated in the drinking water of Fisher 344 rats, Toxicol.Appl.Pharmacol., 85, 154-168.


More Definitions of Chronic toxicity

Chronic toxicity means a stimulus that lingers or continues for a long period of time, often one-tenth the life span or more. A chronic effect can be mortality, reduced growth, reproduction impairment, harmful changes in behavior, and other nonlethal effects.
Chronic toxicity means that level of pollutants which would, over long durations or recurring exposure, cause a continuous, adverse or unacceptable response in organisms.
Chronic toxicity means death or other adverse impacts that affect the growth, survival, or reproductive success of an organism or its progeny after a relatively long exposure period to toxic substances. Chronic toxicity is measured using intermediate-term or long-term bioassays.
Chronic toxicity means the ability of a hazardous substance to cause injury or death to an organism resulting from repeated or constant exposure to the hazardous substance over an extended period of time.
Chronic toxicity means when the survival, growth, or reproduction, as applicable, for either test species, at the effluent dilution(s) designated in this permit (see Part I.C.), is significantly less (at the 95 percent confidence level) than that observed for the control specimens.
Chronic toxicity means lethal or sublethal adverse effect(s) to an organism or its progeny, based on various physiological measurements including but not limited to growth, survival, or reproductive success when exposed to a toxic pollutant(s) for a relatively long period of time. The methods commonly used to estimate chronic effects involve exposures of typically seven (7) days or less.
Chronic toxicity means a toxic effect which occurs after repeated or prolonged exposure. Chronic effects may occur some time after exposure has ceased.