occlusion
noun
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What Do the Words occlusion, recluse, seclusion, and exclude Have in Common?
Occlusion is a descendant of the Latin verb occludere, meaning "to close up." Occludere in turn comes from the prefix ob-, here meaning "in the way," and the verb claudere, meaning "to close or shut." Occlusion is one of many English terms derived from claudere. Some others are recluse, seclusion, and exclude. An occlusion occurs when something has been closed up or blocked off. Almost all heart attacks are the result of the occlusion of a coronary (heart) artery by a blood clot. When a person's upper and lower teeth form a malocclusion, they close incorrectly or badly. An occlusion, or occluded front, happens when a fast-moving cold front overtakes a slow-moving warm front and slides underneath it, lifting the warm air and blocking its movement.
Examples of occlusion in a Sentence
Ben Dowsett, WIRED, 14 Aug. 2024
It can be flown manually but hosts a suite of autonomous features for tracking and stalking targets, even through occlusions.
—New Atlas, 12 Oct. 2024
As the wind roared and cows ran for their lives, the meteorologist in him studied the storm’s structure, admiring the occlusion process.
—David Gelles, New York Times, 19 July 2024
Anything that causes perpetual sweat gland blockage (occlusion) can cause recurrent heat rash.
—Christopher Bergland, Verywell Health, 1 July 2024
See all Example Sentences for occlusion 
Dictionary Entries Near occlusion
Cite this Entry
“Occlusion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/occlusion. Accessed 1 Dec. 2024.
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occlusion
noun
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occlusion
noun
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