supersulphate
noun
1A salt containing the highest possible proportion of sulphate (now chiefly historical ).
2A commercial preparation, especially a fertilizer or a cement, containing a high proportion of sulphate.
Origin
Early 19th century; earliest use found in Friedrich Accum (1769–1838), chemist.
- close-hauled
- close in
- close-knit
- close-lipped
- closely
- closely fought
- closely knit
- close-minded
- close-mouthed
- closeness
- close one's eyes to
- close one's mind to
- close (or dear) to (or near) one's heart
- close (or near) to home
- close (or shut) one's eyes to
- close (or shut) one's mind to (or against)
- close (or shut) the door on (or to)
- closeout
- close-packed
- close quarters
- closer
- close range
- close ranks
- close-ratio
- close reach