a. 使干燥的

n. 干燥剂

[医] 干燥的, 收湿的

[ noun ]
a substance that promotes drying (e.g., calcium oxide absorbs water and is used to remove moisture)
<noun.substance>

Siccative \Sic"ca*tive\, a. [L. siccativus.]
Drying; causing to dry. -- n. That which promotes drying.