Last Updated
：2025/11/23
radium dial
（ plural ）
Quizzes for review
The dial of a watch or clock on which the hours have been marked with a radium compound to make them luminous
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radium dial
The museum warned visitors not to handle the antique watch with its radium dial, citing safety concerns.
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The museum warned visitors not to handle the antique watch with its radium dial, citing safety concerns.
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