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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 letter ...
The initial letters "z" and "y" appear in the largest SI prefixes. They were changed because of previously proposed ascending hepto (Greek "hepta" (7)) was already in use as a numerical prefix (implying seven) and the letter "h" as both SI-accepted non-SI unit (hour) and prefix (hecto 10 2), the same applied to "s" from previously proposed ...
The reference designator usually consists of one or two letters followed by a number, e.g. C3, D1, R4, U15. The number is sometimes followed by a letter, indicating that components are grouped or matched with each other, e.g. R17A, R17B. The IEEE 315 standard contains a list of Class Designation Letters to use for electrical and electronic ...
The barn (b) is a unit of area used in nuclear physics equal to one hundred femtometres squared (100 fm 2 = 10 −28 m 2). The are (a) is a unit of area equal to 100 m 2. The decare (daa) is a unit of area equal to 1000 m 2. The hectare (ha) is a unit of area equal to 10 000 m 2 (0.01 km 2).
The initial letters of a name, for example: cyanotrichite: Cya and mitscherlichite: Mits. A combination considered characteristic of the mineral name, for example: ewingite: Ewg and neighborite: Nbo. A selection of letters expressing components of the name, for example: adranosite = Arn and hellandite: Hld.
To classify electric stock, a two-letter prefix was used to indicate what type it was, followed by a number issued sequentially from 1. This was a system adapted from that used by the LNER for its electric stock (e.g. EM1, see here). The additional prefixes used were: AL: AC electric locomotive; AM: AC electric multiple unit
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The following is an alphabetical list of Greek and Latin roots, stems, and prefixes commonly used in the English language from A to G. See also the lists from H to O and from P to Z . Some of those used in medicine and medical technology are not listed here but instead in the entry for List of medical roots, suffixes and prefixes .