noun
: a measure of the relative desirability of a drug for attaining a particular medical end that is usually expressed as the ratio of the largest dose producing no toxic symptoms to the smallest dose routinely producing cures
noun
: a measure of the relative desirability of a drug for attaining a particular medical end that is usually expressed as the ratio of the largest dose producing no toxic symptoms to the smallest dose routinely producing cures
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012