noun

occlusion

uh-KLOO-zhun/əˈkluːʒn/

The blocking or closing of a passage, opening, or view.

The compact plug causes complete occlusion of the pipe's opening.

A pipe opening is completely blocked by a compact plug, cross-section exposes obstruction without labels or arrows.

Etymology

ocLatinagainst, in front of

+clusLatinto shut, close

+ionLatinaction or result

The pieces describe shutting something off or closing against passage. The noun names the act or result: a closure or blockage that prevents anything from passing through.

In context

Dr. EyeGuy0:45

take a retinal vein occlusion there's a blockage in the vein of the eye sometimes you can get this occlusion and not really have any symptoms

Sudden Blurry Vision In One Eye?! (5 Causes)

More examples

Even partial occlusion of the airway can make breathing difficult.
The surgeon removes the occlusion to restore normal blood flow.
Nearby branches cause partial occlusion of the camera's view.

Forms

occlusion · occlusions

occlude verb — To block or close a passage.

Similar words

blockage: Often names the material or object that stops passage.
obstruction: Can mean a hindrance rather than a complete blocking.
closure: Emphasizes shutting an opening rather than blocking passage through it.