Emperor Napoleon III em·pe·ror·napoleoniii uncommon noun 1. nephew of Napoleon I and emperor of the French from 1852 to 1871 (1808-1873) SynonymsNapoleon IIIEmperor Napoleon IIICharles Louis Napoleon Bonaparte Related words Broader terms Emperor WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
