The crossword solution for the term 'SMITHSONIAN, E.G. (ABBR.)' is INST, which stands for 'INSTITUTION'. The Smithsonian INSTITUTION is a group of museums and research centers administered by the United States government. It was founded in 1846 and is named after its founder, James Smithson. The Smithsonian INSTITUTION is the world's largest museum, education, and research complex, with 19 museums, 9 research centers, and over 140 affiliate museums around the world.