ETYM Pref. inter- + national: cf. French international.
Concerning or belonging to all or at least two or more nations.
One that is international; especially; an organization of international scope
The, Coordinating body established by labor and socialist organizations, including:
First International or International Working Men’s Association 1864–72, formed in London under Karl Marx.
Second International 1889–1940, founded in Paris.
Third (Socialist) International or Comintern 1919–43, formed in Moscow by the Soviet leader Lenin, advocating from 1933 a popular front (communist, socialist, liberal) against the German dictator Hitler.
Fourth International or Trotskyist International 1938, somewhat indeterminate, anti-Stalinist.
Revived Socialist International 1951, formed in Frankfurt, Germany, a largely anticommunist association of social democrats.
Any of several international socialist organizations.