smithsonian

/S M IH0 TH S OW1 N IY0 AH0 N/
noun
  1. 1

    The Smithsonian Institution, a group of museums and research centers established in 1846 and administered by the United States government.

adjective
  1. 1

    Of or pertaining to James Smithson (c.1765โ€“1829), British mineralogist and chemist whose bequest was used to set up the Smithsonian Institution in the United States.