alkali waste
noun
Residue from the manufacture of soda ash, consisting chiefly of calcium sulphide.
Origin
Mid 19th century; earliest use found in The Times.
- herpetology
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- Herrenvolk
- Herrick, Robert
- herring
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- herringbone stitch
- herring gull
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- Hertzian wave
- Hertzsprung–Russell diagram