closed

adjective

1. Made impassable.
2. Sealed or covered.
3. Physically drawn together, folded or contracted.
4. In a position preventing fluid from flowing.
5. Not available for use or operation.
6. Not operating or conducting trade.
7. Not allowing entrance to visitors or the public.
8. Not receptive.
9. Not public.
10. Of a competition or tournament: with the competitors restricted to a specific group, such as professionals, amateurs, members or residents.
11. Not in current use; not connected to as a resource.
12. Settled; decided or determined; withdrawn from consideration.
13. Having one end joined to the other, forming a completed loop.
14. In a position allowing electricity to flow.
15. Whose first and last vertices are the same, forming a closed loop.
16. Having an open complement.
17. Such that its image under the specified operation is contained in it.
18. Lacking a free variable.
19. Lacking endpoints. For parametric curves, with the same image for the ends of the domain.
20. Lacking a boundary.