Thematic index of Numbers & multiples

atto- | In units of measurement, a factor of 10^{-18}. |

bi- | Two; having two; doubly. |

centi- | One hundredth; a multiple of a hundred. |

chili- | A thousand. |

dec(a)- | Ten. |

decem- | Ten. |

deci- | One tenth. |

demi- | Half; partially. |

deuter(o)- | Second; secondary. |

di- | Twice, two, double. |

dodec(a)- | Twelve. |

du(o)- | Two; having two. |

duodeci- | Twelve; twelfth. |

ennea- | Nine. |

exa- | In units of measurement, a factor of 10^{18}. |

femto- | In units of measurement, a factor of 10^{-15}. |

giga- | In units of measurement, a factor of one thousand million or 10^{9}. In computing, often a factor of 2^{30} (1,073,741,824). |

hect(o)- | One hundred. |

hemi- | Half; a part. |

hendeca- | Eleven. |

hepta- | Seven. |

hex(a)- | Six. |

icos- | Twenty. |

kilo- | In units of measurement, a factor of a thousand. |

micro- | Small; a factor of one millionth. |

milli- | One thousandth; a thousand. |

mon(o)- | One; alone; single. |

multiples | Standard systems of number prefixes. |

nano- | In units of measurement, a factor of 10^{-9}. |

nona- | Nine; having nine. |

number prefixes | Number prefixes derived from Latin and Greek. |

number words | Words for multiples of thousands. |

octo- | Eight; having eight. |

pent(a)- | Five; having five. |

peta- | In units of measurement, a factor of 10^{15}. |

pico- | In units of measurement, a factor of 10^{-12}. |

-plex | Having a given number of parts or units. |

quadr(i)- | Four; having four parts; square. |

quinqu(e)- | Five; having five parts. |

quint(i)- | Five; the fifth in a series. |

sept(i)- | Seven. |

sesqui- | One and one half. |

sex(i)- | Six. |

-some^{2} | A group of a specified number. |

-teen | Forming the names of numerals from 13 to 19. |

ter- | Three; having three. |

tera- | In units of measurement, a factor of 10^{12}, a million million. |

tetr(a)- | Four; having four. |

-th^{1} | Forming ordinal and fractional numbers. |

tri- | Three; having three. |

trito- | Third. |

-ty^{2} | Groups of ten. |

undec(a)- | Eleven. |

uni- | One; having or consisting of one. |

viginti- | Twenty. |

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