terabyte

[ter-uh-bahyt] /ˈtɛr əˌbaɪt/
noun, Computers.
1.
2 40 (1,099,511,627,776) bytes; 1024 gigabytes.
2.
(loosely) 10 12 or one trillion (1,000,000,000,000) bytes; 1000 gigabytes. Symbol: TB, TByte.
Origin
1980-85; tera- + byte
British Dictionary definitions for terabytes

terabyte

/ˈtɛrəˌbaɪt/
noun
1.
(computing) 1012 or 240 bytes
Word Origin and History for terabytes

terabyte

n.

by 1982, from tera- + byte.

terabytes in Science
terabyte
  (těr'ə-bīt')   

  1. A unit of computer memory or data storage capacity equal to 1,024 gigabytes (240 bytes).

  2. One trillion bytes. See Note at megabyte.