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English Lexicon

Hygroscopicity

/ˌhaɪ.ɡroʊ.skəˈpɪs.ə.ti/
nounCEFR C2 (Proficient)Top #8500 frequency
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Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    The ability of a substance to attract and hold water molecules from the surrounding environment.

    "The hygroscopicity of salt makes it clump together in humid conditions."
  2. 2

    A measure of how readily a material absorbs moisture.

    "Materials with high hygroscopicity are often used in desiccants."
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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

Derived from the Greek hygro- (meaning wet or moisture) and skopein (meaning to look at or observe), combined with the English nominal suffix -ity. The term emerged in scientific contexts during the 18th and 19th centuries to describe the physical phenomenon of materials absorbing moisture from the surrounding atmosphere, closely aligning with the Japanese concept of shikke-kyūshū (湿気吸収).

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