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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

The planetary transit itself lasted about seven hours, much longer than the transits typically seen for hot Jupiters, which can last an hour or less.

From Science Daily • May 22, 2026

This model permitted reasonably accurate predictions of planetary motion, certainly good enough for the precision of measurement available in Ptolemy’s day, and even many centuries later.

From "Cosmos" by Carl Sagan




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