Meaning of INSTALLATION in English

noun the whole of a system of machines, apparatus, and accessories, when set up and arranged for practical working, as in electric lighting, transmission of power, ·etc.

2. installation ·noun the act of installing or giving possession of an office, rank, or order, with the usual rites or ceremonies; as, the installation of an ordained minister in a parish.

Webster English vocab.      Английский словарь Webster.