The testing of a metal or ore to determine its ingredients and quality
new plate was taxed when it was brought for assay
An establishment for the assaying of ores and metals
Measurement of the concentration, potency, or other properties of a substance by its qualitative or quantitative effect on living cells or organisms.
Biology and Medicine. Designating a method of studying and measuring a biologically active substance and its cellular receptors using a radiolabelled form of the substance, typically involving competitive binding between the radiolabelled and unlabelled forms; of or relating to such a technique. Especially in radioreceptor assay.