Definition of "chymist"

And indeed, when in the writings of Paracelſus I meet with ſuch Phantaſtick and Un-intelligible Diſcourſes as that Writer often puzzels and tyres his Reader with, father'd upon ſuch excellent Experiments, as though he ſeldom clearly teaches, I often find he knew ; me thinks the Chymiſts, in their ſearches after truth, are not unlike the Navigators of Solomons Tarſhiſh Fleet, who brought home from their long and tedious Voyages, not only Gold, and Silver, and Ivory, but Apes and Peacocks too ; For ſo the Writings of ſeveral (for I ſay not, all) of your Hermetick Philoſophers preſent us, together with divers Subſtantial and noble Experiments, Theories, which either like Peacocks feathers make a great ſhew, but are neither ſolid nor uſeful ; or elſe like Apes, if they have ſome appearance of being rational, are blemiſh'd with ſome abſurdity or other, that when they are Attentively conſider'd, makes them appear Ridiculous.

1661, Robert Boyle, “THE CONCLUSION”, in The Sceptical Chymist: or Chymico-Physical Doubts & Paradoxes, Touching the Spagyrist's Principles Commonly call'd Hypostatical, As they are wont to be Propos'd and Defended by the Generality of Alchymists. Whereunto is præmis'd Part of another Diſcourſe relating to the ſame Subject‎, London: J. Caldwell, pages 429–430‎

"Count, I have no physician, nor do I mean to have one. I paid more to those medical men at Brighton than is satisfactory to my conscience on reflection; but, as I took care of the prescription, I get my drugs from the chymists, and make them up at home."

1842, [anonymous collaborator of Letitia Elizabeth Landon], chapter LVI, in Lady Anne Granard; or, Keeping up Appearances. […], volume III, London: Henry Colburn, […], page 91

Chymists speak of imponderable substances, which is as impossible a conception as that of atoms.

1882, F. Max Müller, Lectures on the Science of Language, volume II, page 632