occlusion

O1C3C3L1U1S1I1O1N1
/əˈkluː.ʒən/

noun

The process of occluding, or something that occludes.

Similar
occluded frontblockageblockclosurestopstoppage
OriginLate Latin occlūsiō, occlūsiōnis ← Latin occlūdō →
Less commonScrabble 13
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Meanings

nounocclusion (countable and uncountable, plural occlusions)

plural occlusions

  1. countableuncountableThe process of occluding, or something that occludes.
  2. countableuncountablemedicineAnything that obstructs or closes a vessel or canal.
  3. countableuncountabledentistryThe alignment of the teeth when upper and lower jaws are brought together.
  4. countableuncountableclimatologyAn occluded front.
  5. countableuncountablehuman sciencesA closure within the vocal tract that produces an oral stop or nasal stop.
  6. countableuncountablenatural sciencesThe absorption of a gas or liquid by a substance such as a metal.
  7. countableuncountablecomputer graphicsThe blocking of the view of part of an image by another.

Synonyms & antonyms

noun(meteorology) a composite front when colder air surrounds a mass of warm air and forces it aloft

Similar
occluded front
Broader
front

nounan obstruction in a pipe or tube

Similar
blockageblockclosurestopstoppage
Broader
obstructionobstructorobstructer

nounthe act of blocking

Similar
blockageclosure
Broader
obstruction
Also see
blockblockageclosureoccluded frontstopstoppage

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Latinocclūdō“to shut up or close up; to restrain”
  2. Late Latinocclūsiō, occlūsiōnis“occluding, obstruction”
  3. Englishocclusion

Borrowed from Late Latin occlūsiō, occlūsiōnis (“occluding, obstruction”), from the Classical Latin occlūdō (“to shut up or close up; to restrain”), from ob + claudō (“to shut or close”).

More words from Late Latin, Latin

Full word history & related roots →

Translations

French occlusion
  • occlusionTranslations
Spanish oclusión
  • oclusiónTranslations

Rhymes & wordplay

Rhymes with occlusion

conclusionfusioninclusionconfusionexclusiondiffusionintrusionillusioninfusiontransfusionextrusiondelusionBelarusianseclusioneffusionallusionprofusionprotrusiondisillusionmalocclusionpreclusioncontusionVenusianabusion
All rhymes →
Cite this entry
APA

occlusion. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/occlusion

MLA

“occlusion.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/occlusion. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “occlusion,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/occlusion.

Source: occlusion on Wiktionary, CC BY-SA 4.0.