Top Definition
Planetarianism (Planetary Humanism) is a Humanist political philosophy emphasising the importance of universal values and affirming the need to strengthen the unity and the influence of international institutions. Also, Planetarianism advocates the decentralization of governments and the establishment of the society as the essential unit of politics.
Planetarianism is a humanist political movement.
by Maximilian Justinian September 07, 2008

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