Definition

1. Adjective:
   • Blocked or Closed: Describes a passage, duct, or vessel that has become obstructed or shut.
   • Absorbed and Held: (In chemistry and physics) Describes a substance that has been taken into and is being retained within the structure of another substance.

Examples of Usage

• Adjective (Blocked):
  • The patient was diagnosed with an occluded artery, requiring immediate intervention.
  • A buildup of plaque can lead to an occluded blood vessel.
• Adjective (Absorbed):
  • The palladium metal contained occluded hydrogen gas within its crystal lattice.
  • The study focused on the amount of occluded air in the porous material.

Advanced Usage

• Meteorology: In weather systems, an occluded front (or occlusion) is formed when a cold front overtakes a warm front, lifting the warm air mass off the ground.
  • The forecast predicts rain as the occluded front moves through the region.

Variants and Related Words

• Occlude (verb): To block, close, or obstruct.
  • A blood clot can occlude a coronary artery.
• Occlusion (noun): The process or state of being occluded; an obstruction.
  • Dental occlusion refers to how the upper and lower teeth fit together.
  • The occlusion of the pipe caused a flood.
• Occlusive (adjective): Having the property of occluding; causing closure.

Synonyms

• Blocked: Obstructed, clogged, plugged, stopped up.
• Closed: Sealed, shut, obstructed.
• Absorbed: Entrapped, incorporated, sorbed, retained.

Antonyms

• Open: Clear, patent, unobstructed, free-flowing.
• Released: Emitted, discharged, expelled.

Adjective

1. (of a substance) taken into and retained in another substance
   • the sorbed oil mass
   • large volumes of occluded hydrogen in palladium
2. closed off
   • an occluded artery