oc·​clude | \ ə-ˈklüd How to pronounce occlude (audio) , ä- \
occluded; occluding

Definition of occlude

transitive verb

1 : to close up or block off : obstruct a thrombus occluding a coronary artery also : conceal cosmetics that occlude pores
2 : sorb Palladium occludes large volumes of hydrogen.

intransitive verb

1 : to come into contact with cusps of the opposing teeth fitting together His teeth do not occlude properly.
2 : to become occluded

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Examples of occlude in a Sentence

a blood clot had occluded a major artery in his body
Recent Examples on the Web In the first, a patient who from birth had one eye occluded — from a cataract, for example, or from rare eyelid problems — but then had that anatomical problem removed still ended up with one blind or nearly blind eye. Quanta Magazine, "The Brain Reshapes Our Malleable Senses to Fit the World," 24 Mar. 2020 The only problem: Roads can be occluded by buildings, trees, or even street signs. Courtney Linder, Popular Mechanics, "How Machine Learning Will Lead to Better Maps," 27 Jan. 2020 The clear blue autumn sky was occluded by low ceilings and heavy beams; in places, early evening sunlight shone between the unplastered laths of the home’s interior walls, travelling from one room to the next. Geoff Manaugh, The New Yorker, "Witch Houses of the Hudson Valley," 31 Oct. 2019 Her grace is occluded by her preschool motor skills, but the talent for winning a crowd is evident. Jamie Lauren Keiles, Time, "'What Do People Want Me to Do? Wear Black Every Day?': How Child Star JoJo Siwa Built Her Sparkly Empire," 22 Aug. 2019 But about midway through the thirty-five minute show, the fireworks became occluded by their own smoke. Osita Nwanevu, The New Yorker, "Cutouts of J.F.K., Jr., Tanks, and Adulation at Trump’s “Salute to America”," 6 July 2019 To know that Thomas Jefferson and George Washington enslaved men, women and children does not occlude their role in generating the founding documents and practices of the United States, but must sit beside it and be explained. Karin Wulf, Twin Cities, "Karin Wulf: What Naomi Wolf and Cokie Roberts teach us about the need for historians," 13 June 2019 The book brings into focus intellectual and emotional realities of the decade during and after World War II that current historical memory largely occludes behind heroicizing or condescending stereotypes. Edward Mendelson, The New York Review of Books, "Reading in an Age of Catastrophe," 7 Mar. 2019 Their smaller size means that planets occlude a relatively larger fraction of the light from the star, making them easier to spot. John Timmer, Ars Technica, "Get ready for a flood of new exoplanets: TESS has already spotted two," 21 Sep. 2018

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

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First Known Use of occlude

1581, in the meaning defined at transitive sense 1

History and Etymology for occlude

Latin occludere, from ob- in the way + claudere to shut, close — more at close entry 1

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Time Traveler for occlude

Time Traveler

The first known use of occlude was in 1581

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Statistics for occlude

Last Updated

9 Apr 2020

Cite this Entry

“Occlude.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/occlude. Accessed 5 Jun. 2020.

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More Definitions for occlude


oc·​clude | \ ə-ˈklüd, ä- How to pronounce occlude (audio) \
occluded; occluding

Medical Definition of occlude

transitive verb

1 : to close up or block off : obstruct a thrombus occluding a coronary artery
2 : to bring (upper and lower teeth) into occlusion
3 : to take in and retain (a substance) in the interior rather than on an external surface : sorb proteins in precipitating may occlude alcohol

intransitive verb

1 : to come into contact with cusps of the opposing teeth fitting together his teeth do not occlude properly
2 : to become occluded

More from Merriam-Webster on occlude

Thesaurus: All synonyms and antonyms for occlude

Rhyming Dictionary: Words that rhyme with occlude

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