copperas
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English
[edit]
Alternative forms
[edit]Etymology
[edit]From Middle English coperas, coperose (“metallic sulfate”), from Old French coperose. Compare French couperose (“sulfate”), Medieval Latin cuprosa, Late Latin aqua cuprosa, Latin cupri rosa, "rose of copper".
Noun
[edit]copperas (usually uncountable, plural copperases)
- iron(II) sulfate.
- 1707, J[ohn] Mortimer, The Whole Art of Husbandry; or, The Way of Managing and Improving of Land. […], 2nd edition, London: […] J[ohn] H[umphreys] for H[enry] Mortlock […], and J[onathan] Robinson […], published 1708, →OCLC:
- It were superfluous to describe the Process of making the Aqua fortis; it shall suffice to let you know, that our common Coperas makes this Aquafortis well enough for our purpose […]
- 1843 April, Thomas Carlyle, “ch. 6, Monk Samson”, in Past and Present, American edition, Boston, Mass.: Charles C[offin] Little and James Brown, published 1843, →OCLC, book II (The Ancient Monk):
- […] what a change has introduced itself everywhere into human affairs! How human affairs shall now circulate everywhere not healthy life-blood in them, but, as it were, a detestable copperas banker’s ink;
- obsolete sulphate compound with one of three metals, zinc, copper or iron
Synonyms
[edit]Derived terms
[edit]Translations
[edit]iron(II) sulfate — see iron(II) sulfate
sulphate compound with one of three metals
Further reading
[edit]- copperas on merriam-webster.com
- David Barthelmy (1997–2024) “Copperas”, in Webmineral Mineralogy Database.
- “copperas”, in Mindat.org[1], Hudson Institute of Mineralogy, 2000–2024.