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English Lexicon

Hydrated lime

/ˈhaɪ.drɪ.tɪd laɪm/
nounCEFR C1 (Advanced)Top #14200 frequency
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Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    A dry powder obtained by the reaction of quicklime with water, used in various industrial processes and as a soil amendment.

    "The construction workers used hydrated lime to stabilize the soil before laying the foundation."
  2. 2

    A chemical compound, calcium hydroxide, often used in water treatment and as a pH regulator.

    "Hydrated lime is commonly added to drinking water to adjust its acidity."
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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

The term combines the chemical past participle 'hydrated' (derived from the Greek 'hydor' meaning water) with 'lime', originating from Old English 'līm' meaning birdlime, mortar, or gum. Historically, it refers to calcium hydroxide produced by treating calcium oxide with water, a foundational building material used since ancient Roman times.

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