noun, Printing.
a point about ten percent above the exact center of a printed page or layout.


Read Also:

  • Optical-character-recognition

    noun, Computers. 1. the process or technology of reading data in printed form by a device (optical character reader) that scans and identifies characters. Abbreviation: OCR. optical character recognition The electronic identification and digital encoding of printed or handwritten characters by means of an optical scanner and specialized software.

  • Optical-computer

    noun 1. an experimental computer that uses photons rather than electrical impulses to process data a thousand times faster than with conventional integrated circuits.

  • Optical crown

    noun 1. an optical glass of low dispersion and relatively low refractive index. It is used in the construction of lenses

  • Optical density

    noun 1. (physics) the former name for reflection density, transmission density optical density n. See absorbance.

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