Glossary of Terms


Like any industry, ours uses a variety of terms. If you want to find out what they mean, you are in the right place! Simply click on a letter to see its list of terms. If the term you are looking for isn't listed in our glossary feel free to contact us so that we may help you as well as add it to our list.

A Glossary of Terms B Glossary of Terms C Glossary of Terms D Glossary of Terms E Glossary of Terms F Glossary of Terms G Glossary of Terms H Glossary of Terms I Glossary of Terms J Glossary of Terms K Glossary of Terms L Glossary of Terms M Glossary of Terms N Glossary of Terms
O Glossary of Terms P Glossary of Terms Q Glossary of Terms R Glossary of Terms S Glossary of Terms T Glossary of Terms U Glossary of Terms V Glossary of Terms W Glossary of Terms X Glossary of Terms Y Glossary of Terms Z Glossary of Terms Other Glossary of Terms

SI Prefix

An SI Prefix is a prefix which can be applied to any unit of the International System of Units (SI) to give subdivisions and multiples of that unit.

Not all such prefixes are exclusive to SI. Many SI Prefixes, and the very idea of using prefixes for this purpose, predate the introduction of the SI in 1960, so they are also quite properly used with many non-SI units.

As part of the SI system they are officially determined by the Bureau International des Poids et Mesures.

As an example, the prefix kilo multiplies by one thousand, so a kilometer is 1,000 meters, and a kilowatt is 1,000 watts. The prefix milli subdivides by a thousand, so a millimeter is one-thousandth of a meter (1000 millimeters in a meter), and a milliliter is one-thousandth of a liter. The ability to apply the same prefixes to any SI unit is one of the key strengths of the SI, since it considerably simplifies the system's learning and use.


SI Prefixes
10n Prefix Symbol Short Scale Long Scale Decimal equivalent
1024 Yotta Y Septillion Quadrillion 1 000 000 000 000 000 000 000 000
1021 Zetta Z Sextillion Trilliard (thousand trillion) 1 000 000 000 000 000 000 000
1018 Exa E Quintillion Trillion 1 000 000 000 000 000 000
1015 Peta P Quadrillion Billiard (thousand billion) 1 000 000 000 000 000
1012 Tera T Trillion Billion 1 000 000 000 000
109 Giga G Billion Milliard (thousand million) 1 000 000 000
106 Mega M Million 1 000 000
103 Kilo k Thousand 1 000
102 Hecto h Hundred 100
101 Deca, Deka da Ten 10
100 none none One 1
10-1 Deci d Tenth 0.1
10-2 Centi c Hundredth 0.01
10-3 Milli m Thousandth 0.001
10-6 Micro µ, u Millionth 0.000 001
10-9 Nano n Billionth Milliardth 0.000 000 001
10-12 Pico p Trillionth Billionth 0.000 000 000 001
10-15 Femto f Quadrillionth Billiardth 0.000 000 000 000 001
10-18 Atto a Quintillionth Trillionth 0.000 000 000 000 000 001
10-21 Zepto z Sextillionth Trilliardth 0.000 000 000 000 000 000 001
10-24 Yocto y Septillionth Quadrillionth 0.000 000 000 000 000 000 000 001

TOP
Internet Payments

Visa Logo  Mastercard Logo



Footer Divider

© 1999 - 2018  •  Keiger Graphic Communications  •  3735 Kimwell Drive, Winston-Salem, NC 27103
Contact our Webmaster if you have any questions or comments concerning this site.