zoom

1 zoom /ˈzuːm/ verb
zooms; zoomed; zooming
1 zoom
/ˈzuːm/
verb
zooms; zoomed; zooming
Britannica Dictionary definition of ZOOM
[no object]
1 
always followed by an adverb or preposition informal
a  : to move quickly
b  : to move quickly upward
2 
informal : to increase suddenly — often + up

zoom in

[phrasal verb]
◊ When a camera or photographer zooms in, the lens of the camera is adjusted so that the image seems to be bigger and closer.
— often + on
— often used figuratively

zoom out

[phrasal verb]
◊ When a camera or photographer zooms out, the lens of the camera is adjusted so that the image seems to be smaller and farther away.
2 zoom /ˈzuːm/ noun
plural zooms
2 zoom
/ˈzuːm/
noun
plural zooms
Britannica Dictionary definition of ZOOM
2 
[singular] informal : the loud sound of a vehicle that is moving very fast