Zoom in on

to move quickly or suddenly with a loud humming or buzzing sound:
cars zooming by on the freeway.
to fly an airplane suddenly and sharply upward at great speed for a short distance, as in regaining alt-tude, clearing an obstacle, or signaling.
movies, television. to bring a subject, scene, etc., into closeup or cause it to recede into a long shot using a and while maintaining focus.
informal. to increase or rise suddenly and sharply:
rents would zoom without rent control laws.
to cause (an airplane) to zoom.
to fly over (an obstacle) by zooming.
the act or process of zooming.
a zooming sound.
informal. .
also called zoom shot. movies, television. a shot in which a subject, scene, or action is brought closer or made to recede by the use of a .
zoom in (on),

to bring (a subject, scene, etc.) into closeup by using a zoom lens:
to zoom in for a look at the injured man; to zoom in on a candidate at a political convention.
to examine more closely or in greater detail; focus on:
the panel zoomed in on the subject of abortion.

verb
to make or cause to make a continuous buzzing or humming sound
to move or cause to move with such a sound
(intransitive) to move very rapidly; rush: we zoomed through town
to cause (an aircraft) to climb briefly at an unusually steep angle, or (of an aircraft) to climb in this way
(intransitive) (of prices) to rise rapidly
noun
the sound or act of zooming
see zoom lens

1886, of echoic origin. gained popularity c.1917 as aviators began to use it; zoom lens is 1936.
obtain a close up view of the subject with a camera, as in the tv people zoomed in on the olympic gold medalist. [ mid-1900s ]
focus on, examine closely, as in the moderator got the panelists to zoom in on the health-care issue. [ second half of 1900s ]