Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • One trillion (1012): terahertz.
  • 1,099,511,627,776 (240): terabyte.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 1012. Symbol: T

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

From Greek teras, monster; see kwer- in Indo-European roots.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Ancient Greek τέρας (teras, "monster").

Examples

  • Meanwhile, Alex and his postdoc Andy Connolly had calculated that the data including images were going to add up to around 12 terabytes—“tera-” is “trillion”—and somehow, some astronomer should be able to ask the archive something like “Find all blue galaxies near quasars.”

    A Grand and Bold Thing

  • Kilo-, mega-, giga- and tera- are prefixes used with bit or byte to measure capacities.

    Essential Guide to Business Style and Usage

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