Posted by: A. C. Cockerill | October 26, 2011

Factoid #18: Metric System Prefixes

Factoid #18:

The metric system offers some great prefixes for generating new words.

Peta – 1,000,000,000,000,000 – quadrillion

Tera – 1,000,000,000,000 – trillion

Giga – 1,000,000,000 – billion

Mega – 1,000,000 – million

Kilo – 1,000 – thousand

Hecto – 100 – hundred

Deka – 10 – ten

Deci – 0.1 – tenth

Centi – 0.01 – hundredth

Milli – 0.001 – thousandth

Micro – 0.000,001 – millionth

Nano – 0.000,000,001 – billionth – atomic and small molecular scale

Pico – 0.000,000,000,001 – trillionth – subatomic scale

Femto – 0.000,000,000,000,001 – quadrillionth

New word:Β  Picoblog –Β This blog is too small to be called either a microblog or a nanoblog.


  1. Thanks Ashley. I learned something new today. I remember teachers trying to cram the metric system on us when I was a kid. Barely any of it stuck!

    • You’re welcome, Casey. This stuff didn’t stick with me either. I think it was the memorizing-thing coupled with the what-on-Earth-do-I-need-this-stuff-for thing. Now, it’s cool. Cheers, Ashley

  2. Wow…I knew more of these than I thought! Love the Picoblog…

    • Thank you, Christine. This is kinda fun isn’t it! Cheers, Ashley

  3. Not anything I’d really thought of before. Thanks.

    • Hi Vicki, You’re so welcome. Cheers, Ashley

  4. Love your fun factoids! These will come in handy in making up new words along the way. Thanks! Picoblog…cool! πŸ™‚

    • Thank you so much, Rhonda. Isn’t making up new words such fun? πŸ™‚ Cheers, Ashley

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