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Definition of Watch glass
1. Noun. Laboratory glassware; a shallow glass dish used as an evaporating surface or to cover a beaker.
Generic synonyms: Dish
2. Noun. A protective cover that protects the face of a watch.
Exact synonyms: Crystal, Watch Crystal
Generic synonyms: Protection, Protective Cover, Protective Covering
Group relationships: Ticker, Watch
Generic synonyms: Protection, Protective Cover, Protective Covering
Group relationships: Ticker, Watch
Definition of Watch glass
1. Noun. (context: chemistry) An item of glass laboratory equipment consisting of a simple slightly concave circle of glass. It is a general utility item, used to hold small samples, to evaporate liquids, to cover a beaker, and so on. ¹
¹ Source: wiktionary.com