Dose means quantity in the following fields: In nutrition, medicine, and toxicology: Dose (biochemistry), the quantity of something that may be eaten by or administered to an organism, or that an organism may be exposed to. Quantities of nutrients, drugs, and toxins are referred to as doses. In medicine and toxicology: Effective dose, the smallest amount of a substance required to produce a measurable effect on a living organism Absorbed dose, an amount of radiation received Equivalent dos… (More on Dose)