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occlusion

occlusion

8.6
A weather front that forms when cold air surrounds and lifts warm air above ground
  • noun
  • /əˈkluːʒən/
  • Specialized
translation icon : oclusión
  • The weather report explained that the occlusion would lead to a change in temperature and increased storm activity.

Examples

  • So as soon as the occlusion begins, then the energy source to keep this storm going begins to weaken.

  • An occlusion occurs when the warm front is captured between two colder fronts, potentially leading to severe weather conditions.

  • Meteorologists predict that the cold occlusion will lift the warm air, causing heavy rainfall in the area.

Synonyms

occluded front
vsocclusion
  • Specialized
1 7.5

A weather front when a cold front catches a warm front and lifts the warm air above the cold air

is the general term focusing on colder air surrounding and lifting warm air

Compounds

coronary occlusion
  • Specialized
1 6.0

A blocked artery in the heart that can cause a heart attack

Surface Forms

occlusion singular
occlusions plural

Morphology

occlusion = occlude (semi-transparent) = occlude + sion

The meteorological term is formed by the usual nounation of 'occlude', but the specific technical sense 'occluded front' is a specialized usage.

Etymology

Occlusion comes from the Latin occludere and its parts ob- 'against' and claudere 'to close', and in weather it helps to picture cold air 'closing' around warm air and lifting it up. So a weather occlusion is when warm air is shut off from the ground.