The term is often used in a broader sense to refer to any substance that exhibits a crystalline structure, even if it is not transparent.
Here are some additional details about the word:
* Etymology: The word "krystallos" is believed to originate from the Greek word "kryos," which means "ice." This is because the ancient Greeks thought that crystals were a form of frozen water.
* Modern Usage: The word "krystallos" is rarely used in modern English. We typically use the word "crystal" instead.
* Pronunciation: The word "krystallos" is pronounced "kri-STAL-los."
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