closed (EN)

adjective

adjective “closed”

1. not allowing entry or passage; completely shut
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   The jar was tightly closed, so I couldn't get to the cookies inside.
2. positioned to stop fluid from moving through a system
   The plumber closed the valve to stop the water from gushing out of the broken pipe.
3. set to allow electrical current to pass through
   Make sure the circuit is closed before you try to turn on the light.
4. not open for customers or business activities
   The sign on the door read "We're closed" as I arrived at the shop after hours.
5. restricted to certain people; not open to everyone
   The meeting was a closed event, accessible only to company employees.
6. containing all its limit points; its complement is open in the topological space
   The set of all points inside a circle is closed because it includes its boundary.