a. Obs. rare–1. [f. med.L. alchitre-us adj. f. alchitrum (see prec.) + -AN.] Of or pertaining to the resin of the Pine.
1560. P. Whitehorne, Ord. Sould. (1588), 46. For to make them [fireworks], there must be taken Rosen Alchitrean, quicke Brimstone, etc.
