Is it a desiccan, or a desiccant?

Is it a desiccan, or a desiccant?

You know those pesky packets you get in new shoes that say, Do Not Eat? Well, the Nutty Chemist tore a bunch of them open to make this dessicator. The substance drying inside is copper nitrate, a pretty blue crystal and the byproduct of their ventures into anodizing.

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