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persulpho-

persulpho-
  see per- 5, 5 b and sulpho-.

1836 Brande Chem. (ed. 4) 658 Persulphocyanuret of Iron..may be obtained in the form of a deliquescent uncrystallizable mass, of a red colour. 1880 Nature XXI. 363/1 On persulphocyanate of silver.

Oxford English Dictionary

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