LAURENTIAN SYSTEM

\lɔːɹˈɛnʃən sˈɪstəm], \lɔːɹˈɛnʃən sˈɪstəm], \l_ɔː_ɹ_ˈɛ_n_ʃ_ə_n s_ˈɪ_s_t_ə_m]\

Definitions of LAURENTIAN SYSTEM