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| Algonkian |
of, relating to, or designating the later of two geological periods of the Precambrian Era, from approximately 2.5 billion to 600 million years ago, when the first evidence of life appeared; Late Precambrian; Proterozoic. [1/4 definitions] |
| Archean |
of, relating to, or designating the earlier of two geological periods of the Precambrian Era, ending approximately 2.5 billion years ago, during which highly crystalline igneous and metamorphic rocks were formed; Early Precambrian; Archeozoic; azoic. [1/2 definitions] |
| BeV |
a unit of energy equal to one billion electron-volts. [1/2 definitions] |
| bevatron |
a synchrotron used to accelerate protons and other particles to a level of several billion electron-volts. |
| billion |
being one billion in number. [1/5 definitions] |
| billionaire |
one whose wealth amounts to at least a billion dollars, pounds, francs, or the like. |
| GHz |
abbreviation of "gigahertz," a unit of frequency equal to one billion hertz. |
| giga- |
one billion. |
| gigabyte |
a unit of electronic storage capacity or memory equal to 1,073,741,824 bytes or approximately one billion bytes. (abbr.: G or GB) |
| gigahertz |
a unit of frequency equal to one billion hertz. (abbr.: GHz) |
| gigaton |
a unit of power used in measuring the force of nuclear weapons, equal to the explosive force of a billion tons of TNT. |
| gigawatt |
a unit of power equal to one billion watts. |
| multibillion |
combined form of billion. |
| ppb |
abbreviation of "parts per billion." |
| The Beatles |
an English rock group from 1962 to 1970 that achieved an unprecedented level of popularity and has sold over one billion records. |
| trillion |
the product of multiplying one billion times one thousand. [1/5 definitions] |
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