Pit (redirected from preauricular 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.

Pits and Lands

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.)

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Pit,

the Board of Trade’s cellar, where all bidding occurs. [Am. Lit.: The Pit. Magill I, 756–758]

See : Gambling

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PIT - Language for IBM 650. (See IT).