Ulysses Simpson Grant ulys·ses·simp·songrant uncommon noun 1. 18th President of the United States; commander of the Union armies in the American Civil War (1822-1885) SynonymsGrantUlysses GrantUlysses S. GrantUlysses Simpson GrantHiram Ulysses GrantPresident Grant Related words Broader terms generalPresident of the United States WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.