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watch-glass
noun
- a curved glass disc that covers the dial of a watch
- a similarly shaped piece of glass used in laboratories for evaporating small samples of a solution, etc
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Example Sentences
The fluid to be examined is simply placed in a watch-glass, the watch-glass resting on the microscope stand.
From Project Gutenberg
The precipitate is filtered off by means of a miniature filter, and then removed on to a watch-glass.
From Project Gutenberg
The watch-glass maker exercises a function distinct from any one of those we have hitherto been considering.
From Project Gutenberg
If the drop is large, place it face upward on the rubber mat, cover it with an inverted watch-glass, and allow it to dry.
From Project Gutenberg
Place the cover-slip, film uppermost, on the rubber mat, and cover it with an inverted watch-glass until dry.
From Project Gutenberg
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