Medical dictionary. 2011.
lowest observed adverse effect level — (LOAEL), lowest observed effect level (LOEL) in studies of the toxicity of chemicals, the lowest dosage level at which chronic exposure to the substance shows adverse effects; usually calculated for laboratory animals … Medical dictionary
No observable adverse effect level — The no observable adverse effect level (NOAEL) denotes the level of exposure of an organism, found by experiment or observation, at which there is no biologically or statistically significant (e.g. alteration of morphology, functional capacity,… … Wikipedia
no-observed-adverse-effect level — abbr. NOAEL The highest exposure level at which there are no biologically significant increases in frequency or severity of adverse effects between the exposed population and its appropriate control group; some effects may be produced at this… … Petroleum refining glossary
lowest-observed-adverse-effect level — abbr. LOAEL The lowest exposure level at which there are statistically or biologically significant increases in frequency or severity of adverse effects between the exposed population and its appropriate control group (US EPA 2002) … Petroleum refining glossary
No observable adverse effect level (NOAEL) — NOAEL (No observable adverse effect level) denotes the level of exposure of an organism, found by experiment or observation, at which there is no biologically or statistically significant (e.g. alteration of morphology, functional capacity,… … Wikipedia
Adverse effect (medicine) — In medicine, an adverse effect is a harmful and undesired effect resulting from a medication or other intervention such as chemotherapy or surgery. An adverse effect may be termed a side effect (when judged to be secondary to a main or… … Wikipedia
Adverse effect — Classification and external resources ICD 10 T78 ICD 9 995.89 In medicine, an … Wikipedia
Butterfly effect — For other uses, see Butterfly effect (disambiguation). Point attractors in 2D phase space. In chaos theory, the butterfly effect is the sensitive dependence on initial conditions; where a small change at one place in a nonlinear system can result … Wikipedia
Hawthorne effect — The Hawthorne effect is a form of reactivity whereby subjects improve or modify an aspect of their behavior being experimentally measured simply in response to the fact that they know they are being studied,[1][2] not in response to any… … Wikipedia
LOAEL — • lowest observed adverse effect level … Dictionary of medical acronyms & abbreviations
