A laboratory container or apparatus used to dry and store materials by removing moisture, often containing a drying agent.
From 'exsiccate' plus '-or' suffix (agent noun), referring to a device or container that performs the drying function.
A desiccator (or exsiccator) is basically a vault for keeping things dry—scientists use them to store hygroscopic compounds that would absorb moisture from air and ruin their experiments!
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