Definition of watch glass in English:

watch glass

Line breaks: watch glass

noun

British
  • 1A glass disc covering the dial of a watch.
    More example sentences
    • Pairs of these watch glasses can be connected to each other to simulate different types of lens.
    • Consequently, the aesthetic appearance of these types of watch glasses or back covers are relatively quickly altered by scratches.
    • A device comprising an annular seal having an annular projection engaged into a groove in the edge of the watch glass is disclosed.
  • 1.1A concave glass disc used in a laboratory to hold material for use in experiments.
    More example sentences
    • In vitro fertilizations were performed by collecting oocytes from mature females in watch glasses and adding a diluted suspension of sperm obtained from 1 to 2 mature male ejaculates in sterile filtered seawater.
    • Place sample on flat watch glass inside the glass ring form such that the sample is centered in the ring form.
    • Pairs were placed in a watch glass and observed under a stereomicroscope.

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