matrix grammar
a formal grammar in which instead of single productions, productions are grouped together into finite sequences, which are referred to as matrices
en-GB/ˈmeɪtɹɪks ˈɡɹæmə/
en-US/ˈmeɪtɹɪks ˈɡɹæmɚ/
a formal grammar in which instead of single productions, productions are grouped together into finite sequences, which are referred to as matrices