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Prefix name N/A deci centi milli micro nano pico femto atto zepto yocto ronto quecto; Prefix symbol d c m μ n p f a z y r q Factor 10 0: 10 −1:
Except for the early prefixes of kilo-, hecto-, and deca-, the symbols for the prefixes for multiples are uppercase letters, and those for the prefixes for submultiples are lowercase letters. [ 8 ] All of the metric prefix symbols are made from upper- and lower-case Latin letters except for the symbol for micro , which is uniquely a Greek ...
micro μ 0.000 001: 10 −6: nano n ... 10 −9: pico p 0.000 000 ... that lists the most commonly used metric prefixes. The list is a subset of the list in the 8th ...
The prefixes of the metric system precede a basic unit of measure to indicate a decadic multiple and fraction of a unit. Each prefix has a unique symbol that is added to the beginning of the unit symbol. Some of the prefixes date back to the introduction of the metric system in the 1790s, but new prefixes have been added, and some have been ...
The following table lists the names of small numbers used in the long and short scales, along with the power of 10, engineering notation, and International System of Units (SI) symbols and prefixes. [1] [page needed] [2] [page needed] [3] [page needed] [4] [5] [6] [7]
An order of magnitude of time is usually a decimal prefix or decimal order-of-magnitude quantity together with a base unit of time, like a microsecond or a million years. In some cases, the order of magnitude may be implied (usually 1), like a "second" or "year". In other cases, the quantity name implies the base unit, like "century". In most ...
However, 1935 extensions to the prefix system did not follow this convention: the prefixes nano-and micro-, for example have Greek roots. [16]: 222–223 During the 19th century the prefix myria-, derived from the Greek word μύριοι (mýrioi), was used as a multiplier for 10 000. [17]
Note 1: The lower limit between micro- and nano-sizing is still a matter of debate. Note 2: To be consistent with the prefix “micro” and the range imposed by the definition, dimensions of microparticles should be expressed in μm. [1]