oc·​cul·​ta·​tion | \ ˌä-(ˌ)kəl-ˈtā-shən How to pronounce occultation (audio) \

Definition of occultation

1 : the state of being hidden from view or lost to notice
2 : the interruption of the light from a celestial body or of the signals from a spacecraft by the intervention of a celestial body especially : an eclipse of a star or planet by the moon

Examples of occultation in a Sentence

Recent Examples on the Web This also isn’t the first time that Gaia has predicted an occultation event, either. Joshua Hawkins, BGR, 15 June 2022 While occultation events aren’t uncommon in space observations—lunar eclipses happen quite often—one like this is fairly rare. Joshua Hawkins, BGR, 15 June 2022 The hour-long occultation is only visible from a narrow path across Earth, which includes North America and Europe. Jamie Carter, Forbes, 31 Dec. 2021 During an occultation, the planet passes behind the star. Ashley Strickland, CNN, 28 Sep. 2020 The team also observed the WASP-189 system during occultation—when a planet passes behind a star. Paola Rosa-aquino, Popular Science, 5 Oct. 2020 Known as a lunar occultation, the moon will seem to glide in front of Mars from 10 to 20 minutes, as seen across a vast portion of the central region of the continent. National Geographic, 2 Sep. 2020 Researchers were able to capture an occultation and a transit of the planet and the star using Cheops. Ashley Strickland, CNN, 28 Sep. 2020 European scientists are also collecting data from something called radio occultation, a relatively new system that uses the bending of GPS signals through the atmosphere to detect properties such as water vapor, temperature, and air pressure. Eric Niiler, Wired, 4 June 2020 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'occultation.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of occultation

15th century, in the meaning defined at sense 1

History and Etymology for occultation

Middle English occultacion, borrowed from Latin occultātiōn-, occultātiō "concealment, interruption of light from a celestial body," from occultāre "to prevent from being seen, conceal, keep secret" + -tiōn- -tiō, suffix of verbal action — more at occult entry 1

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The first known use of occultation was in the 15th century

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occult balance

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Last Updated

16 Aug 2022

Cite this Entry

“Occultation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/occultation. Accessed 19 Aug. 2022.

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More from Merriam-Webster on occultation

Britannica English: Translation of occultation for Arabic Speakers

Britannica.com: Encyclopedia article about occultation


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