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atto- |
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atto- word element [Danish], eighteen ; used in naming units of measurement to designate an amount one quintillionth (10−18) the size of the unit to which it is joined; symbol a.
atto-, a prefix in the metric system indicating a value of one quintillionth, or 10-18. atto- a prefix signifying one million-million-millionth, or 10−18; symbol a. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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