Drier
Part of speech: adjective
Definition: Free from or lacking moisture.
Part of speech: noun
Definition: One who, or that which, dries; a desiccative. Catalyst used to promote the drying of paints and varnishes by oxidative crosslinking.
Desiccant
Part of speech: adjective
Definition: Causing dryness
Part of speech: noun
Definition: A substance (such as calcium oxide or silica gel) that is used as a drying agent because of its high affinity to water.