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Definitions

planetary

[plan-i-ter-ee] / ˈplæn ɪˌtɛr i /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He added: "The clock is ticking if we want to halt the worst effects of planetary warming but there is still time."

From BBC • Jun. 9, 2026

The Dumbbell Nebula, also known as Messier 27, holds a special place in astronomy history as the first planetary nebula ever discovered.

From Science Daily • Jun. 3, 2026

Roman, however, will search largely unexplored areas of the Milky Way, offering a much broader view of planetary systems across our galaxy.

From Science Daily • Jun. 1, 2026

Current models suggest rocky planets form near stars because intense radiation strips away gas surrounding developing planetary cores.

From Science Daily • May 21, 2026

In the next few decades we should have definite answers to which of the hundred nearest stars have large planetary companions.

From "Cosmos" by Carl Sagan




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