Definitions

1. adjective

blocking or obstructing the flow of a fluid, gas, or other substance

“The occlusive material prevented the liquid from flowing through the pipe.”

2. noun

a sound made with the tongue or lips blocking the airflow in the mouth, such as a stop or a nasal

“The linguist studied the various occlusive sounds in the foreign language.”

3. noun

a device or material used to block or obstruct the flow of a fluid, gas, or other substance

“The occlusive device failed to stop the leak in the engine.”