Label

a brief description given for purposes of identification

trade name of a company that produces musical recordings

a radioactive isotope that is used in a compound in order to trace the mechanism of a chemical reaction

an identifying or descriptive marker that is attached to an object

assign a label to

attach a tag or label to

pronounce judgment on

distinguish (as a compound or molecule) by introducing a labeled atom

distinguish (an element or atom) by using a radioactive isotope or an isotope of unusual mass for tracing through chemical reactions