silica-gel

silica gel

noun Chemistry.
a highly adsorbent gelatinous form of silica, used chiefly as a dehumidifying and dehydrating agent.

Origin:
1915–20

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World English Dictionary
silica gel
 
n
an amorphous form of silica capable of absorbing large quantities of water: used in drying gases and oils, as a carrier for catalysts and an anticaking agent for cosmetics

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