Below are possible answers for the crossword clue Sulphur, key preservative.
4 letter answer(s) to sulphur, key preservative
SALT
(of speech) painful or bitter; "salt scorn"- Shakespeare; "a salt apology"
a compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal)
add salt to
add zest or liveliness to; "She salts her lectures with jokes"
negotiations between the United States and the Union of Soviet Socialist Republics opened in 1969 in Helsinki designed to limit both countries' stock of nuclear weapons
preserve with salt; "people used to salt meats on ships"
sprinkle as if with salt; "the rebels had salted the fields with mines and traps"
the taste experience when common salt is taken into the mouth
white crystalline form of especially sodium chloride used to season and preserve food
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