concave lens

/ˈkɑnˌkeɪv lɛnz/
IPA guide

Definitions of concave lens
  1. noun
    a lens such that a parallel beam of light passing through it is caused to diverge or spread out
    synonyms: diverging lens
    see moresee less
    type of:
    lens, lens system, lense
    a transparent optical device used to converge or diverge transmitted light and to form images
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