Alch. Obs. rare. Also -us. [a. Gr. τίτανος gypsum, chalk, white earth.] = MAGNESIA 1.
c. 1386. Chaucer, Can. Yeom. Prol. & T., 901. Take the stoon that Titanos men name. Which is that quod he? Magnasia is the same Seyde Plato.
1477. Norton, Ord. Alch., iii. (MS. Harl. 853, No. 4 (1589), lf. 40 b). Chawcer rehearseth how Titanos is the same In the Cannon his tale.
1584. R. Scot, Discov. Witchcr., XIV. ii. (1886), 295. The end … is, to atteine unto the composition of the philosophers stone, called Alixer, and to the stone called Titanus.
