1. (in a series of salts of a given metal or group)
the salt in which the metal or group has a high, or the highest apparent, valence
2. (loosely)
the salt of a peroxy acid
Word origin
[1810–20; per- + salt1]This word is first recorded in the period 1810–20. Other words that entered Englishat around the same time include: cleavage, dominance, dynamic, technique, voodoo