Simple Definition of zoom lens
: a camera lens that can make the size of the image become larger and smaller : a camera lens that can zoom in or zoom out
Full Definition of zoom lens
: a lens (as of a camera or projector) in which the image size can be varied continuously while the image remains in focus
First Known Use of zoom lens
Seen and Heard
What made you want to look up zoom lens? Please tell us where you read or heard it (including the quote, if possible).