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biological effective dose; abbreviated, BED (s) (noun), biological effective doses (pl)
The amount of a substance that is sufficient to bring about some significant physiological changes in the affected organism; specifically, the level of exposure to a toxic substance that is required to produce a harmful effect: The doctors continue to study the biological effective doses of radiation that are being administered to treat the skin cancer of Mark's cousin.
A unit related to: “bed
(Greek: bed; slope, slant; to lean, leaning; an ecological term; in the sense of a slope or gradient)