occlude
UK: əˈkluːd | US: əˈkluːd
vt. to block or obstruct (a passage, opening, etc.)
vt. (in chemistry) to absorb and retain (a gas or impurity)
vt. (in dentistry) to bring the upper and lower teeth into contact
The word occlude originates from Latin occludere, combining ob- (against) and claudere (to close). It entered English in the late 16th century, initially describing physical obstruction. Over time, its usage expanded to scientific contexts, such as chemistry (gas absorption) and dentistry (tooth alignment). The core idea of "closing off" remains consistent across all meanings.
The surgeon used a clamp to occlude the blood vessel during the procedure.
Certain materials can occlude harmful gases, making them useful for filtration.
Proper dental alignment ensures the teeth occlude correctly when chewing.
The valve is designed to occlude the flow of liquid when pressure drops.
Clouds may occlude the sun, causing temporary shade.