- Z-fold
A paper fold represented by back and forth folds into three panels.
- Zig-Zag Folding
The fanfolding used on continuous forms to convert roll paper to a continuous flat stack of forms.
- Zip
To compress electronic files using the PKZIP program.
- ZIP Code
Zone Improvement Plan Code
A system established in 1963 that uses 5-digit codes to identify the individual post offices or delivery stations in metropolitan areas associated with an address.
- Zip Drive
A medium-capacity removable disk storage system, introduced by Iomega in late 1994. Originally it had a capacity of 100 MB, but later versions increased this to first 250 MB and then 750 MB.
The format became the most popular of the super-floppy type products but never reached the status of a quasi-standard to replace the 3.5-inch floppy disk.
It has been superseded by flash drive systems as well as rewritable CDs and DVDs, and is fading in popularity.
The Zip brand was also used for internal and external CD writers known as Zip-650 or Zip-CD.
- ZIP+4
A system established in 1981 that added a hyphen and 4 digits to the 5-digit ZIP Code.
The first two digits of the four additional digits designate the sector or geographic area.
The last two digits designate a specific delivery segment, such as a city block, a floor of a building or a group of post office boxes.
- Zoom
To electronically increase the size of an image on a screen for the purpose of viewing and/or editing.
- Zoom Lens
Telephoto Lens
A lens with a long focal length, generally above 55mm, which enables a distant setting to be brought closer than a standard lens would allow for photographing.
A lens in which you adjust the focal length over a wide range.
A 50mm lens with a 3x zoom is the same as a lens having the capability to go from 50mm to 150mm.
In effect, this gives you lenses of many focal lengths.