Definition of "planetary" []

• Of, relating to, or resembling the physical or orbital characteristics of a planet or the planets. (adjective)
• Of or relating to the earth; terrestrial or earthly: measured the planetary tilt in degrees. (adjective)
• Of or affecting the entire world; global: a planetary consensus. (adjective)
• Wandering; erratic: a planetary life. (adjective)
• Being or relating to a gear train consisting of a central gear with an internal ring gear and one or more pinions. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Al Gore says everyone should worry about what he calls a planetary emergency."
• "He said he was accepting it on behalf of everyone trying to make a difference on what he calls a planetary emergency."
• "He's urging lawmakers right now to act and to act fast to avoid what he calls a planetary emergency."