## CLOSED

### closed

#### Verb

**closed**

#### Adjective

- Sealed, made inaccessible or impassable; not open
- Not operating or conducting trade
- Not public.
*closed source**a***closed**committee

- Having an open complement.
- Such that its image under the specified operation is contained in it.
*The set of integers is***closed**under addition: <math>\forall x,y\in\mathbb{Z}\,x+y\in\mathbb{Z}</math>.

- Lacking a free variable.

*The above text is a snippet from Wiktionary: closed*

and as such is available under the Creative Commons Attribution/Share-Alike License.

and as such is available under the Creative Commons Attribution/Share-Alike License.