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watch glass

noun
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Definition of watch glass

1 : watch crystal
2a : a usually glass dish similar to a watch crystal in shape but made in various sizes
b : syracuse watch glass

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“Watch glass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/watch%20glass. Accessed 1 Oct. 2020.

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