Threshold

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  • The lowest non-zero dose of a chemical at which a specified measurable effect occurs. Sometimes used to refer to the income level above which an applicant for food stamp benefits would be ineligible.
  • minimum amount of stimulation that obtains a response
    Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
  • (1) The lowest dose of a chemical at which a specified measurable effect is observed and below which it is not observed. (2) The dose or exposure level below which a significant adverse effect is not expected.
    Source: Terms of the Environment


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