occlusion

• 表示关闭或阻塞的动作，或关闭、阻塞的状态；常用于医学中指血管阻塞、牙科中指牙齿咬合以及气象学中指大气锋面受阻。

A noun referring to the act of closing or blocking, or the state of being closed or blocked, commonly used in medical contexts for blood vessels, in dentistry for tooth alignment, and in meteorology for weather fronts.

1. Medical blockageC1formalmedical

   A closure or obstruction, especially of a blood vessel or other bodily passage.

   阻塞

   • The patient suffered a retinal artery occlusion.
   • A coronary occlusion can lead to a heart attack.
   • Doctors treated the intestinal occlusion with surgery.

   同义词blockadeblockageclosureobstructionstoppage

2. Meteorological frontC1formalscientific

   A weather phenomenon where a cold front overtakes a warm front, forcing the warm air upward.

   锢囚锋

   • An occlusion often brings prolonged precipitation.
   • Meteorologists tracked the occlusion moving across the region.
   • The occluded front caused heavy rain and cooler temperatures.

   同义词occluded front

3. Dental alignmentC1formalmedical

   The way the upper and lower teeth fit together when the mouth is closed.

   咬合

   • The dentist checked the patient's occlusion for any misalignment.
   • Malocclusion can cause jaw pain and difficulty chewing.
   • Braces are often used to correct improper occlusion.

   同义词bite

4. Pipe or tube blockageC1formaltechnical

   An obstruction that prevents flow through a pipe, tube, or passage.

   堵塞

   • The plumber cleared the occlusion in the drainpipe.
   • An occlusion in the fuel line caused the engine to stall.
   • Regular maintenance helps prevent occlusions in industrial pipes.

   同义词blockageclogobstructionstoppage

5. Act of blockingC1formal

   The process or action of blocking or obstructing something.

   阻塞

   • The occlusion of the airway required immediate intervention.
   • The occlusion of sunlight by clouds cooled the area.
   • The occlusion of the canal was caused by debris.

   同义词blockageblockingcloggingobstructionsealingstoppage

   反义词clearanceopeningpatency