The state, condition, or realm of druses or druse-like structures in minerals and rocks.
From druse plus -dom, a suffix creating nouns for domains, states, or realms. Similar to 'kingdom,' 'wisdom,' and 'freedom,' which all use -dom to name abstract concepts.
The -dom suffix is magical—it can turn almost any noun into an abstract concept: add -dom to a job and you get the state of having that job, add it to science and suddenly you have an entire philosophical realm.
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