magistery
noun
mag·is·tery
plural -es
1
: a principle of nature having transmuting or curative powers : philosophers' stone
he that hath water turned to ashes, hath the Magistery, and the true Philosophers' stone
James Howell
James Howell2
obsolete : mastership, authority
3
obsolete
a
: precipitate sense 1
b
: any of various white precipitates from metallic solutions
a white precipitate of bismuth subnitrate was formerly known as magistery of bismuth
Word History
Etymology
Medieval Latin magisterium, from Latin, office of a supervisor, office of tutor or guardian, instruction, from magister master