Laboratory

facility that provides controlled conditions in which scientific or technological research, experiments, and measurement may be performed

A laboratory (lab for short) is a work place where scientific research, experiments, or measurement are done.

Michael Faraday, 19th century physicist and chemist, in his lab
Biochemistry laboratory at the University of Cologne

The word laboratory is also used for other places where the work done or equipment used are like those in scientific laboratories. These include:

Scientific laboratories can be found in schools and universities, in hospitals, in industry, in government or military facilities, and even aboard ships and spacecraft.