watch glass
A 'watch glass' serves dual purposes in both laboratory settings and horology, referring to a concave glass used for various scientific tasks and the protective glass covering of a watch face.
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Definition
B2Laboratory
(technical)A circular, concave piece of glass used to hold samples, evaporate liquids, or cover beakers.
Example
- The chemist placed the solution on a watch glass to allow it to evaporate.
- A watch glass was used to cover the beaker and prevent contamination.
B2Horology
(technical)The curved glass disc that protects the face of a watch.
Example
- The watch glass was scratched, so he had it replaced.
- A clear watch glass is essential for reading the time accurately.
Similar
Terms that have similar or relatively close meanings to "watch glass":
water glasshand glassglass childon watchfield glassunder glassglass jawgarden glassperspective glass