Definition:Metric System/Scaling Prefixes/atto-

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Definition

atto- is the Système Internationale d'Unités metric scaling prefix denoting a multiplier of $10^{-18}$.


Symbol

$\mathrm a$

The Système Internationale d'Unités symbol for the metric scaling prefix atto, denoting $10^{\, -18 }$, is $\mathrm { a }$.


Its $\LaTeX$ code is \mathrm {a} .


Sources