the policy or advocacy of maintaining strict neutrality in foreign affairs.
2.
Biology. the theory that some changes in evolution are governed by random mutations that become fixed in populations by chance rather than by natural selection.
A political policy or advocacy of nonalignment or noninvolvement in conflicting alliances and of attempting to mediate or conciliate in conflicts between states: "Neutralism differs from neutrality in that it is an attitude of mind in time of peace rather than a legal status in time of war"(London Times).