occlusion

noun

• 1 Medicine the blockage or closing of a blood vessel or hollow organ.
• Phonetics the momentary closure of the passage of breath during the articulation of a consonant.

• 2 Meteorology a process in which the cold front of a rotating low-pressure system overtakes the warm front, forcing the warm air upward above a wedge of cold air.
• an occluded front.

• 3 Dentistry the position of the teeth when the jaws are closed.