cop·per·as 
(kŏpər-əs)
(kŏpər-əs)n.
A green, crystalline heptahydrate mineral of ferrous sulfate, FeSO4·7H2O. Also called green vitriol.
[Middle English coperose, a metallic sulfate, from Old French, from Medieval Latin cuperōsa, probably short for *aqua cuprōsa, copper water, from Late Latin cuprum, copper; see COPPER1.]
- Schwann
- Schwann cell
- Schwarzkopf
- Schwarzkopf
- Schwarzschild radius
- Schweitzer
- Schwerin
- Schwitters
- sciaenid
- sciatic
- sciatica
- sciatic nerve
- SCID
- science
- science fiction
- science-fiction
- scienter
- sciential
- scientific
- scientifically
- scientific creationism
- scientific method
- scientific name
- scientific notation
- scientism