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median lethal dose
noun
- the quantity of a lethal substance, as a poison or pathogen, or of ionizing radiation that will kill 50 percent of the organisms subjected to it in a specified time period. : LD 5 0
median lethal dose
noun
- the amount of a drug or other substance that, when administered to a group of experimental animals, will kill 50 per cent of the group in a specified time
- the amount of ionizing radiation that will kill 50 per cent of a population in a specified time
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˜yÐÄvlog History and Origins
Origin of median lethal dose1
First recorded in 1945–50
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Example Sentences
Examples have not been reviewed.
In toxicology, the median lethal dose, or LD50, is the approximate dose required to kill half the animals in a population being studied.
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