PLANETARY Synonyms: 123 Similar and Opposite Words

planetary

adjective

ˈpla-nə-ˌter-ē

Definition of planetary

as in vast

unusually large a positively planetary new shopping development

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of planetary As a response, NOAA currently expects the planetary Kp index (a measure of geomagnetic activity) to peak at 5. — Valerie Mesa, PEOPLE, 11 Aug. 2026 The research was led by Benjamin Fernando, a seismologist and planetary scientist at Johns Hopkins University in Baltimore, Maryland. — Jamie Carter, Forbes.com, 10 Aug. 2026 In it, Regina and planetary scientist Melissa Rice explore all things shooting stars. — Regina G. Barber, NPR, 5 Aug. 2026 In their present form, toads have existed for at least 30 million years, enduring all kinds of planetary upheaval, from ice ages to the rise of humans. — Kimon De Greef, Longreads, 4 Aug. 2026 See All Example Sentences for planetary

Recent Examples of Synonyms for planetary

Adjective

The Mexican navy searched a vast area of the Pacific Ocean by sea and air, eventually finding the two men floating in a large fishing cooler about 150 miles off the coast of Chiapas, a southern state in Mexico that borders Guatemala.

— Diego Mendoza, CNN Money, 21 Aug. 2026
Masanori Kumagai/Kyodo News via AP Hiraguchi cited surveys showing the vast majority of Japanese supporting the death penalty as an unavoidable option.

— CBS News, CBS News, 21 Aug. 2026

Definition of vast

Adjective

Hardware rich… Engineers have reams of data from all 13 test flights of Starship and its giant booster rocket, known as the Super Heavy.

— Stephen Clark, ArsTechnica, 21 Aug. 2026
Returning and reflying both Starship stages is a key component in SpaceX's design for the giant rocket, which will be the largest, most powerful launch vehicle in history once the company works out all its kinks.

— Josh Dinner, Space.com, 21 Aug. 2026

Definition of giant

Adjective

Kneeling beside the fallen buck, Charles, an avid trophy bowhunter, ran his hands over the gigantic rack.

— Jeff Murray, Outdoor Life, 20 Aug. 2026
Lakes Mead and Powell, which are essentially one gigantic reservoir separated by the Grand Canyon, hold just under 60% of the total watercurrently stored in the Colorado River basin.

— Laura Paddison, CNN Money, 16 Aug. 2026

Definition of gigantic

Adjective

Where sacred meets celestial Science meets religion in the Vatican Observatory, a centuries-old center of astronomical research.

— Maureen O'Hare, CNN Money, 22 Aug. 2026
Schiarapelli's contributions to the astronomical field were significant enough to land him the honor of a Martian crater in his name.

— Josh Dinner, Space.com, 20 Aug. 2026

Definition of astronomical

Adjective

Tucker is being counted on as a middle-of-the-order presence, but the enormous contract has made every prolonged downturn more difficult to ignore.

— Peter Chawaga, Forbes.com, 22 Aug. 2026
The researchers argue that the enormous cliff system triggered prolonged erosion that stripped away vast amounts of rock and helped expose some of North America’s oldest geological formations.

— Kaif Shaikh, Interesting Engineering, 21 Aug. 2026

Definition of enormous

Adjective

According to a new study published in Geology, the massive escarpment formed around 800 million to 750 million years ago as the ancient supercontinent Rodinia began to break apart.

— Kaif Shaikh, Interesting Engineering, 21 Aug. 2026
Coach Keidane McAlpine hopes the Bulldogs, who dominated from start to finish on a massive stage, left a lasting impression.

— Sarah Spencer, AJC.com, 21 Aug. 2026

Definition of massive

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planet

planetary

planets

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“Planetary.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/planetary. Accessed 26 Aug. 2026.

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Synonyms of planetary

adjective

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