n. [ Cf. F. isolation. ] The act of isolating, or the state of being isolated; insulation; separation; loneliness. Milman. [ 1913 Webster ]
n. [ Cf. F. isolation. ] The doctrine or policy of minimal participation by one's country in international economic and political relations, specifically by not entering into alliances or other international agreements, in order to avoid becoming entangled in foreign wars, and to be able to devote the nation's energies primarily to advancing its own domestic interests. [ PJC ]
n. A proponent or supporter of isolationism; one who is isolationistic. [ PJC ]