Extreme Metric Prefixes (less than 1)

Prefix Abbreviation Exponent a sense of scale
basic unit One yard 0.9144 meters
deci d 10-1 One foot 3.048 decimeters
centi c 10-2 One inch 2.54 centimeters
killi k 10-3
quacto q 10-4 Human cell diameter 1 quactometer
harpo h 10-5
micro m 10-6 Bacteria diameter 1 micrometer
frizzo f 10-7 Virus diameter 1 frizzometer
octo o 10-8
gago g 10-9
angstro a 10-10 C-C bond distance 1.45 angstrometers
tico t 10-12
pemto p 10-15 Proton diameter 1 pemtometer
etto e 10-18
vanno v 10-20 Electron charge 16.02 vannoC
zepto z 10-21
yocto y 10-24 Mass of proton 1.673 yoctogram
Mass of electron 9.109 x 10-28 g

The prefixes in red are not authorized by the International Bureau of Weights and Measures.

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One Comment

  1. Posted October 2, 2011 at 11:23 pm | Permalink

    “killi” sounds so cute! And “tico” sounds funny.


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