persulphate /pər-sulˈfāt/

1. That sulphate of a metal which contains the relatively greater quantity of oxygen or of the acid radical
2. A salt of persulphuric /-fūˈrik/ acid (H₂S₂O₈)

• draught-bar
• draughtboard
• draughtboards
• draughted
• draught-engine
• draught-engines
• draughter
• draughters
• draught-hooks
• draught horse
• draught-house
• draught-houses
• draughtier
• draughtiest
• draughtiness
• draughtinesses
• draughting
• draughtman
• draughtmen
• draught-net
• draught-nets
• draught ox
• draught-proof
• draught-proofing
• draughts