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affinatio

affinatio 1 refinement: a of salt (alch.); b of metal. a hec est ~o salium qui in arte alchimie operantur (M. Scot Alch.) Med. Cult. 155.  b cum aurum per calcinationes vel assationes aut ~ones virtutem acquirit ignis M. Scot Sol 716; 1293 in ~one plumbi extracti ‥ KR Ac 260/3; 1323 de plumbo sterili proveniente de dicto plumbo fertili post ~onem et extraccionem argenti albi Pipe 170 r. 53. 2 refinery. 1304 Johanni Lond’ scindenti blockes et minutam buscam pro ~onibus KR Ac 260/7 r. 1d. (cf. ib.: conflantibus folles ‥ ad iiij astra ~onum); 1323 de vij follibus pro ~onibus Pipe 170 r. 53.

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