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Definition of terabyte

terabyte

/ˈtɛr.ə.baɪt/
ter · a · byte
Plural:terabytes
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terabyte Lexical Profile

terabyte Game Scores & Validity

• noun

1

A unit of digital information or computer data storage capacity equal to one trillion (10^12) bytes in the decimal system, or 2^40 (1,099,511,627,776) bytes in binary measurement.

Example

"The external hard drive has a storage capacity of two terabytes, which is enough to hold thousands of high-definition movies."

Word Nuance & Usage

In decimal (SI) measurement used by hard drive manufacturers, a terabyte equals exactly one trillion (10^12) bytes, whereas in binary computing contexts it often refers to 1,099,511,627,776 (2^40) bytes, which is formally termed a tebibyte (TiB).

• Nearby Words

teppanyaki
tequendama
tequila
terabyte
tercentenary
terek
teriyaki

Word Origin & Etymology

Coined in the late 20th century from the metric prefix 'tera-' (derived from Ancient Greek 'teras', meaning 'monster') combined with 'byte'.

Cite this Entry

Wordmom. (2026). Definition of Terabyte. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/terabyte
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