Word of the day: occlusion \uh-KLOO-zhun\ noun: 1 a : the complete obstruction of the breath passage in the articulation of a speech sound b : the bringing of the opposing surfaces of the teeth of the two jaws into contact; also : the relation between the surfaces when in contact c : the inclusion or sorption of gas trapped during solidification of a material. *2 : the front formed by a cold front overtaking a warm front and lifting the warm air above the earth's surface.
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