[zoom] vb [imit.] vi (1886) 1 a: to move with a loud low hum or buzz b: to go speedily: zip
2. of an airplane: to climb for a short time at an angle greater than that which can be maintained in steady flight so that the machine is carried upward at the expense of stored kinetic energy
3: to focus a camera or microscope on an object using a zoom lens so that the object's apparent distance from the observer changes--often used with in or out
4: to increase sharply "retail sales ~ed" ~ vt: to cause to zoom
[2]zoom n (1918) 1 a: an act or process of zooming; esp: a sharp upward movement b: an image created by zooming
2: a zooming sound
3: zoom lens