Zepto
Zepto (symbol z) is a prefix in the SI system of units denoting a factor of 10-21.
Adopted in 1991, it comes from the French sept, meaning seven, since it is equal to 1/10007.
| SI prefixes Edit (http://www.mywiseowl.com/index.php?title=Template:SI_prefixes&action=edit) | ||||
|---|---|---|---|---|
| (Sub)multiple | Prefix | Symbol | Short scale Name | Long scale Name |
| 1024 | yotta | Y | Septillion | Quadrillion |
| 1021 | zetta | Z | Sextillion | Thousand trillion (Trilliard) |
| 1018 | exa | E | Quintillion | Trillion |
| 1015 | peta | P | Quadrillion | Thousand billion (Billiard) |
| 1012 | tera | T | Trillion | Billion |
| 109 | giga | G | Billion | Thousand million (Milliard) |
| 106 | mega | M | Million | |
| 103 | kilo | k | Thousand | |
| 102 | hecto | h | Hundred | |
| 101 | deca | da | Ten | |
| 10-1 | deci | d | Tenth | |
| 10-2 | centi | c | Hundredth | |
| 10-3 | milli | m | Thousandth | |
| 10-6 | micro | µ | Millionth | |
| 10-9 | nano | n | Billionth | Milliardth |
| 10-12 | pico | p | Trillionth | Billionth |
| 10-15 | femto | f | Quadrillionth | Billiardth |
| 10-18 | atto | a | Quintillionth | Trillionth |
| 10-21 | zepto | z | Sextillionth | Trilliardth |
| 10-24 | yocto | y | Septillionth | Quadrillionth |
See also
ca:zepto es:zepto fr:zepto sl:zepto