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planetary

[ plan-i-ter-ee ]
/ ˈplæn ɪˌtɛr i /
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adjective
of, relating to, or resembling a planet or the planets.
wandering; erratic.
terrestrial; global.
Machinery. noting or pertaining to an epicyclic gear train in which a sun gear is linked to one or more planet gears also engaging with an encircling ring gear.
noun
Machinery. a planetary gear train.
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Origin of planetary

From the Latin word planētārius, dating back to 1585–95. See planet, -ary

OTHER WORDS FROM planetary

non·plan·e·tar·y, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use planetary in a sentence

British Dictionary definitions for planetary

planetary
/ (ˈplænɪtərɪ, -trɪ) /

adjective
noun plural -taries
a train of planetary gears
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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