Definition of lens noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//lenz//
    ; NAmE NAmE//lenz//
    Film-making equipment, Face
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  1. 1a curved piece of glass or plastic that makes things look larger, smaller or clearer when you look through it a pair of glasses with tinted lenses a camera with an adjustable lens a lens cap/cover see also fisheye lens, telephoto lens, wide-angle lens, zoom lens See related entries: Film-making equipment
  2. 2(informal) = contact lens Have you got your lenses in?
  3. 3 (anatomy) the transparent part of the eye, behind the pupil, that focuses light so that you can see clearly See related entries: Face
  4. Word Originlate 17th cent.: from Latin, ‘lentil’ (because of the similarity in shape).Extra examples Put your hand in front of your right lens and just look through your left lens. She wears glasses with very thick lenses. The photo was taken using a zoom lens. a long-lens shot of a rare bird a view of Mount Kilimanjaro as seen through Eddie’s camera lens
See the Oxford Advanced American Dictionary entry: lens