Coperas or Copperas: How To spell?

The word Coperas is misspelled against Copperas, a noun meaning "Green vitriol, or sulphate of iron; a green crystalline substance, of an astringent taste, used in making ink, in dyeing black, as a tonic in medicine, etc. It is made on a large scale by the oxidation of iron pyrites. Called also ferrous sulphate."

Copperas has double "pp" is mispronounced as "p"
Remember double 'PP' in between the strings co & eras which should not be misspelled with single 'P'
Wrong Spelling:  co-p-eras 
Correct Spelling:  co-pp-eras 
Find more incorrect spellings of Copperas to spell right way.

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