Definition of "elaboratory"

And this, jfldicioufly applied, in an elaboratory, where many such vessels are used, will make a considerable saving.

1758, Robert Dossie, The Elaboratory Laid Open: Or the Secrets of Modern Chemistry and Pharmacy

He [Mr. Sthael] built his elaboratory in an old hall or refectory. — In the year following he was called away to London, and became operator to the Royal Society; and, continuing there till 1676, he returned to Oxon, and had several classes successively.—The chymical club concluded; and A. W. paid Mr. Sthael 30 shillings, having, in the beginning of the class, given 30 shillings beforehand.

1772, William Huddesford, Thomas Warton, The Lives Of Those Eminent Antiquaries John Leland, Thomas Hearne, And Anthony à Wood