Definitions of install

to put someone in an important job position

Martin Tunn was installed as the new town mayor in the council meeting last night.

to put a piece of equipment in its correct position and prepare it for use

Under the agreement, Verizon will install equipment to improve cell phone service in the area.

to load software into a computer or other device

The auto manufacturer will have to show there was some legitimate reason to install software that led to false vehicle emissions tests.