Meaning of TEST in English
( n. )
A reaction employed to recognize or distinguish any particular substance or constituent of a compound, as the production of some characteristic precipitate; also, the reagent employed to produce such reaction; thus, the ordinary test for sulphuric acid is the production of a white insoluble precipitate of barium sulphate by means of some soluble barium salt.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012