pit
An indentation in an optical medium such as a CD-ROM or DVD. The laser beam is either absorbed in the pit or reflects off the non-indented areas, which are called "lands." Using various algorithms, the reflections are converted into 0 and 1 bits.
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| Pits and Lands |
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| This microscopic view of a CD-ROM and DVD disc compares the track density and pits and lands, which account for 7.5 times as much data on the DVD. (Image courtesy of C-Cube Microsystems.) |
pit
1. the pit hell
2. the area that is occupied by the orchestra in a theatre, located in front of the stage
3. Anatomy
a. a small natural depression on the surface of a body, organ, structure, or part; fossa
b. the floor of any natural bodily cavity
4. Pathol a small indented scar at the site of a former pustule; pockmark
5. any of various small areas in a plant cell wall that remain unthickened when the rest of the cell becomes lignified, esp the vascular tissue
6. a working area at the side of a motor-racing track for servicing or refuelling vehicles
7. a rowdy card game in which players bid for commodities
8. an area of sand or other soft material at the end of a long-jump approach, behind the bar of a pole vault, etc., on which an athlete may land safely
9. the ground floor of the auditorium of a theatre
10. another word for pitfall
pit Chiefly US and Canadian
the stone of a cherry, plum, etc.
Pit,
the Board of Trade’s cellar, where all bidding occurs. [Am. Lit.: The Pit. Magill I, 756–758]
See : Gambling
| PIT - Language for IBM 650. (See IT). |
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