Smith ‧ so ‧ ni ‧ an In ‧ sti ‧ tu ‧ tion, the /smɪθˌsəʊniən ˌɪnstəˈtjuːʃ ə n $ -ˈtuːʃ ə n/ BrE AmE ( also the Smithsonian )
a large group of different ↑ museum s and scientific institutions in Washington, D.C., which was established in 1846 using money left by James Smithson, an English scientist