1. planetary(a = adj.pert) planetal - of or relating to or resembling the physical or orbital characteristics of a planet or the planets; "planetary motion"; "planetary year"
Derived form noun planet1
2. planetary(a = adj.pert) terrestrial - of or relating to or characteristic of the planet Earth or its inhabitants; "planetary rumblings and eructations"; "the planetary tilt"; "this terrestrial ball"
3. planetary(s = adj.all) erratic, wandering - having no fixed course; "an erratic comet"; "his life followed a wandering course"; "a planetary vagabond"
4. planetary(s = adj.all) global, world, world-wide, worldwide - involving the entire earth; not limited or provincial in scope; "global war"; "global monetary policy"; "neither national nor continental but planetary"; "a world crisis"; "of worldwide significance"
1. Of or pertaining to the planets; as, planetary inhabitants; planetary motions; planetary year. [1913 Webster]
2. Consisting of planets; as, a planetary system. [1913 Webster]
3. Under the dominion or influence of a planet. Drayton. [1913 Webster]
4. Caused by planets. Shak. [1913 Webster]
5. Having the nature of a planet; erratic; revolving; wandering. Fuller. [1913 Webster]
planetary, adj.
1 of or like planets (planetary influence).
2 terrestrial; mundane.
3 wandering; erratic.
Idiom:
planetary nebula a ring-shaped nebula formed by an expanding shell of gas round a star.
Etymology:
LL planetarius (as PLANET)
kepler's law of planetary motion, planetary gear, planetary house, planetary nebula