ˈsan(d)ˌmī(ə)r- noun
Usage: usually capitalized S
Etymology: after Traugott Sandmeyer died 1922 Swiss chemist
: a reaction for preparing aromatic halides or cyanides from a salt with a cuprous halide or cyanide as catalyst
ortho -bromo-toluene can be made from ortho -toluene-diazonium bromide by the Sandmeyer reaction