For the first time in more than three decades, officials have designated brand-new prefixes that can be applied to units of measurement within the metric system. Four new prefixes — ronna, ronto, quetta and quecto — will allow scientists to quantify the very largest and smallest things in the universe.
The new prefixes can be applied to any of the seven base units in the metric system: grams for weight; meters for distance; seconds for time; amps for electrical current; kelvin for temperature; moles for amount of substance; and candela for luminosity, as well as other units, such as bytes for computing.
The new names start in 'r' and 'q' because these were the only letters to not be currently assigned in the metric system. The last letter of prefixes for large things is always an 'a' and the last letter of prefixes for small things always ends in an 'o.' The rest of the words are loosely based on the Greek and Latin words for 9 and 10 because the new prefixes are the ninth and tenth largest and smallest prefixes in the metric system.
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