Attn



.
abbreviation
attention
attention

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  • Atto-

    a combining form that enters into compounds denoting a unit one-quintillionth (10 −18) the size of the unit named by the stem. prefix denoting 10–18: attotesla, a word-forming element meaning “one quintillionth,” 1962, from Danish atten “eighteen” (a quintillion is 10 to the 18th power), related to Old English eahtatene (see eighteen). atto- pref. One […]

  • Attolaser

    noun a high-power laser capable of producing pulses with a duration measured in attoseconds



  • Attoparsec

    attoparsec unit, humour About 31 mm (one inch). “atto-” is the standard SI prefix for multiplication by 10^-18. A parsec (parallax-second) is 3.26 light-years; an attoparsec is thus 3.26 * 10^-18 light years. Thus, one attoparsec per microfortnight is about one inch per second. This unit is reported to be in use (though probably not […]

  • Attophysics

    noun the physics of structures and artefacts with dimensions in the attometre range or of devices, such as lasers, capable of producing pulses with a duration measured in attoseconds



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