planetary
adj. B2 Upper Intermediate US //ˈpɫænəˌtɛɹi// UK //plˈænɪtəɹi// plan·e·tary
adj. relating to planets or the whole world. You use this to describe things that happen on a very large scale across our entire home world.
adj. relating to or resembling a planet; involving the entire world. Often used to describe global environmental or geological phenomena.
Scientists are studying planetary movements in our solar system.
Climate change is a planetary challenge that requires every nation to work together.
The probe's mission is to gather data on planetary formation by analyzing the chemical composition of the asteroid belt's largest bodies.
From planet + -ary.
Usage
Typically placed before the noun it modifies.