registration
in color printing, the precise aligning of plates or stencils, usually by means of special marks
en-US/ˌɹɛd͡ʒɪˈstɹeɪʃən/
en-GB/ˌɹɛd͡ʒɪˈstɹeɪʃn/
in color printing, the precise aligning of plates or stencils, usually by means of special marks