/in'teuhr nash"euh nl iz'euhm/ , n.
1. the principle of cooperation among nations, for the promotion of their common good, sometimes as contrasted with nationalism, or devotion to the interests of a particular nation.
2. international character, relations, cooperation, or control.
3. ( cap. ) the principles or methods of a communist or socialist International.
[ 1850-55; INTERNATIONAL + -ISM ]