internationU.S.|ɪntəˈneɪʃən| [n. of action from intern v.] The action of ‘interning’: see intern v. 3. 1885U.S. Cons. Rep.No. 53 1/2. 282 (Cent.) Importations and internations which are made from the 1st of April..through the frontier custom-house of Paso del Norte.