Laboratory
A place for doing tests and research procedures and preparing chemicals, etc.
Although 'laboratory' looks very like the Latin 'laboratorium' (a place to labor, a work place), the word 'laboratory' came from the Latin 'elaborare' (to work out, as a problem, and with great pains), as evidenced by the Old English spelling 'elaboratory' designating 'a place where learned effort was applied to the solution of scientific problems.'