Meaning of INSTALLATION in English

in ‧ stal ‧ la ‧ tion /ˌɪnstəˈleɪʃ ə n/ BrE AmE noun

1 . [uncountable] when someone fits a piece of equipment somewhere:

the installation and maintenance of alarm systems

2 . [countable] a piece of equipment that has been fitted in its place:

The whole computer installation was nearly new.

3 . [countable] a place where industrial or military equipment, machinery etc has been put:

nuclear installations

4 . [countable] a piece of modern art which can include objects, light, sound etc

5 . [uncountable] formal the ceremony of putting someone in an important job or position:

the installation of the new bishop

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.