n.
Pronunciation: ˌ in(t)-st ə - ' l ā -sh ə n
Function: noun
Date: 15th century
1 : the act of installing : the state of being installed
2 : something that is installed for use
3 : a military camp, fort, or base
4 : a work of art that usually consists of multiple components often in mixed media and that is exhibited in a usually large space in an arrangement specified by the artist