occlusion(noun)

closure or blockage (as of a blood vessel)

occluded front, occlusion(noun)

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

occlusion(noun)

(dentistry) the normal spatial relation of the teeth when the jaws are closed

blockage, block, closure, occlusion, stop, stoppage(noun)

an obstruction in a pipe or tube

"we had to call a plumber to clear out the blockage in the drainpipe"

blockage, closure, occlusion(noun)

the act of blocking

occlusion(Noun)

The process of occluding, or something that occludes.

occlusion(Noun)

Anything that obstructs or closes a vessel or canal.

occlusion(Noun)

The alignment of the teeth when upper and lower jaws are brought together.

occlusion(Noun)

An occluded front.

occlusion(Noun)

A closure within the vocal tract that produces an oral stop or nasal stop.

occlusion(Noun)

The absorption of a gas or liquid by a substance such as a metal.

occlusion(Noun)

The blocking of the view of part of an image by another.

Occlusion

An absorption of gases by metals. Palladium will, if used as the hydrogen evolving electrode in decomposing water, absorb 980 times its volume of hydrogen, which is said to be occluded. The metal may also be heated in hydrogen and allowed to cool therein, when occlusion occurs. Platinum will occlude 4 times its volume of hydrogen; iron, 4.15 times its volume of carbon-monoxide; silver, 7 times its volume of oxygen. Metals with occluded gases may serve as elements in a galvanic couple. (See Gas Battery.) A metal expands in occluding a gas. In the storage battery it is believed that occlusion plays a part, hydrogen and oxygen being respectively absorbed by the two sets of plates, and acting as they do in Groves' gas battery.