Middle English Dictionary Entry

coperō̆se n.
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Entry Info

Definitions (Senses and Subsenses)

1.
A metallic sulphate, as of iron (green), of copper (blue), or of zinc (white); vitriol [used in tanning, dyeing, and medicinally].

Supplemental Materials (draft)

  • a1500 Corp-O.291 Artist.Recipes (Corp-O 291) 315/5 : Take grene coperas and sandeur..and put hem yn a pot.
  • ?c1500 Hnt.HU.1051 Recipes in Crafte Lymmyng (Hnt HU 1051) 318/5 : Tak gallys and bray þem to small powder, and put hem in a panne with fayr water and seth hem well, þen put þerto als mych coperus, and seth hem togeder.
  • a1525 Stockh.Huseby.78 Artist.Recipes (Stockh Huseby 78) 286/19 : To make black ynck: copperas and galles.
  • Note: Postdates word. New spellings (coperus & copperas).