What is "atomic cocktail"

alt. 1 (context idiomatic medicine English) A drinkable liquid containing a radioactive substance, used in health care either as a diagnostic aid or as a treatment, especially for cancer of the thyroid. 2 A mixed alcoholic beverage, created in Las Vegas, USA, in the mid-20th century. n. 1 (context idiomatic medicine English) A drinkable liquid containing a radioactive substance, used in health care either as a diagnostic aid or as a treatment, especially for cancer of the thyroid. 2 A mixed alcoholic beverage, created in Las Vegas, USA, in the mid-20th century.

n. an oral dose of radioactive substance used in treatment and diagnosis of cancer