Meaning of zoom lens

zoom' lens"

Pronunciation: [key]
  1. (in a camera or motion-picture projector) a lens assembly whose focal length can be continuously adjusted to provide various degrees of magnification without any loss of focus, thus combining the features of wide-angle, normal, and telephoto lenses.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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