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Affixes: the building blocks of English
Affixes: the building blocks of English

stann(o)-

Tin.

[Latin stannum, tin.]

In chemistry, stannous and stannic refer respectively to tin having a valency of two and four, as in stannous fluoride (SnF2), used to fluoridate toothpaste, and stannic chloride (SnCl4), used as a conductive coating and in ceramics. An ore or mineral containing tin is said to be stanniferous. A stannary was formerly a tin-mining district in Cornwall or Devon, whose miners were regulated by a stannary court.

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