# AAT ICAS 3107 ✧ prefixMetric term set

document note: this document is part of the Integrated Chronological Applications System (ICAS). Alliance for the Advancement of Technology (AAT) provides ICAS standards documents subject to terms of use described in document AAT ICAS 9010. please refer to other key AAT ICAS standards documents accessible via the AAT ICAS web site at https://www.aatideas.org/icas for important information about ICAS.

this document designates the AAT ICAS prefixMetric term set. AAT ICAS Inter-Dial Clock (IDC) chron-unit derived terms and notation are appropriate for fixed implementations of IDC main unit. **special note:** IDC prefixes are derived from the following schemes each possessing certain usage conventions: metric prefixes (SI prefixes), the derived clock unit prefixes (tik and tok), and from the coordinating expressions 'ten' and 'hundred'. please see AAT ICAS 2023 for additional information.

table 3107.1 ✧ aaticas namespace of prefixMetric

aaticas namespace | element set |
---|---|

<aaticas:developer> | AAT ICAS |

<aaticas:local> | English |

<aaticas:etype> | term |

<aaticas:etypeTag> | term |

<aaticas:subtype> | prefix |

<aaticas:subtypeTag> | prefix |

<aaticas:etypeCase> | cs |

<aaticas:etypeID> | prefixMetric |

<aaticas:metaCat> | ICAS metric prefixes |

table 3107.2 ✧ AAT ICAS prefixMetric term set

metaName | metaTag | sayName | sayTag | note | source |
---|---|---|---|---|---|

metaName | metaTag | sayName | sayTag | note | source |

long form coordinating expressions are applied to long form expressions of a principal unit. short form prefix symbols are applied to short form or symbolic expressions of a principal unit. prefix coordinating expressions 'ten' and 'hundred', or derived clock unit terms 'tiko' and 'toko', may be applied to a principal unit in cases of practicable use. | |||||

deci | d | deci | d | 1.0 x 10^{-1} unit submultiple | SI |

centi | c | centi | c | 1.0 x 10^{-2} unit submultiple | SI |

milli | m | milli | m | 1.0 x 10^{-3} unit submultiple | SI |

prefix note: 1 tikochron (IDC derived clock-unit prefix) is equal to 10 microchrons (IDC metric prefix)—1 tiXn = 10 μXn. | |||||

toko | to | toko | to | 1.0 x 10^{-4} unit submultiple | 'toko' is a derived clock unit prefix appropriate for schematic use |

tiko | ti | tiko | ti | 1.0 x 10^{-5} unit submultiple | 'tiko' is a derived clock unit prefix appropriate for schematic use |

micro | μ | micro | μ | 1.0 x 10^{-6} unit submultiple | SI |

nano | n | nano | n | 1.0 x 10^{-9} unit submultiple | SI |

pico | p | pico | p | 1.0 x 10^{-12} unit submultiple | SI |

femto | f | femto | f | 1.0 x 10^{-15} unit submultiple | SI |

atto | a | atto | aXn | 1.0 x 10^{-18} unit submultiple | SI |

zepto | z | zepto | zXn | 1.0 x 10^{-21} unit submultiple | SI |

yocto | y | yocto | yXn | 1.0 x 10^{-24} unit submultiple | SI |

metric usage note:short form expressions of coordinating prefixes for 'ten' and 'hundred' are used in reference to ICAS standards of usage and style. | |||||

deca | da | deca | da | 10 unit multiple | SI |

hecto | h | hecto | h | 100 unit multiple | SI |

kilo | k | kilo | k | 1000 unit multiple | SI |

ten kilo | ten-k | ten kilo | ten-k | coordinated usage | |

hundred kilo | hun-k | hundred kilo | ten-k | coordinated usage | |

coordinating expressions ten and hundred are expressed in symbol form as 'ten' and 'hun' without a hyphen in the case of upper-cased prefix symbols, and with a hyphen in the case of a lower-cased prefix symbol. however uncoordinated expressions of prefixes should otherwise be preferred over coordinated expressions. | |||||

mega | M | mega | M | 1 000 000 unit multiple | SI |

ten mega | tenM | ten mega | tenM | coordinated usage | |

hundred mega | hunM | hundred mega | hunM | coordinated usage | |

giga | G | giga | G | 1 000 000 000 unit multiple | SI |

ten giga | tenG | ten giga | tenG | coordinated usage | |

hundred giga | hunG | hundred giga | hunG | coordinated usage | |

tera | T | tera | T | 1.0 x 10^{12} unit multiple | SI |

ten tera | tenT | ten tera | tenT | coordinated usage | |

hundred tera | hunT | hundred tera | hunT | coordinated usage | |

peta | P | peta | P | 1.0 x 10^{15} unit multiple | SI |

ten peta | tenP | ten peta | tenP | coordinated usage | |

hundred peta | hunP | ten peta | hunP | coordinated usage | |

exa | E | exa | E | 1.0 x 10^{18} unit multiple | SI |

ten exa | tenE | ten exa | tenE | coordinated usage | |

hundred exa | hunE | hundred exa | hunE | coordinated usage | |

zetta | Z | zetta | Z | 1.0 x 10^{21} unit multiple | SI |

ten zetta | tenZ | ten zetta | tenZ | coordinated usage | |

hundred zetta | hunZ | hundred zetta | hunZ | coordinated usage | |

yotta | Y | yotta | Y | 1.0 x 10^{24} unit multiple | SI |

ten yotta | tenY | ten yotta | tenY | coordinated usage | |

hundred yotta | hunY | hundred yotta | hunY | coordinated usage |

aatideas.org document updated:

scale | value | ||
---|---|---|---|

UCN | 12019 S19 Yellow | ||

zone(UT) | t339 tt050 | ||

'ICAS in use' can accommodate calendar and clock formatting 'for all people, for all time'. | |||

AD common year day | 139 | ||

G | 2019 May 19 Sunday | ||

UT | 08:08:14 | ||

style legend |

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