1. (noun)occlusion closure or blockage (as of a blood vessel) Synonyms: occluded front, closure, block, blockage, stop, stoppage
2. (noun)occluded front, occlusion (meteorology) a composite front when colder air surrounds a mass of warm air and forces it aloft Synonyms: occluded front, closure, block, stop, blockage, occlusion, stoppage
3. (noun)occlusion (dentistry) the normal spatial relation of the teeth when the jaws are closed Synonyms: occluded front, closure, block, blockage, stop, stoppage