Definition of "zoom in"

zoom in

/ˌzuːm ˈɪn/

verb
third-person singular simple present zooms in, present participle zooming in, simple past and past participle zoomed in
1. (intransitive) To increase the focal length of a zoom lens in order to obtain a magnified image, or a close-up.
2. (intransitive) To manipulate a display (such as a computer screen) so as to make the image larger.