the amount of a drug, or level of radiation exposure, that is sufficient to achieve the desired clinical improvement.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
The dose, usually of a drug, that produces a desired effect.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.