1. (noun)terabyte, TB a unit of information equal to 1000 gigabytes or 10^12 (1,000,000,000,000) bytes Synonyms: atomic number 65, terbium, terabyte, tuberculosis, terabit, tebibyte
2. (noun)terabyte, tebibyte, TB, TiB a unit of information equal to 1024 gibibytes or 2^40 (1,099,511,627,776) bytes Synonyms: atomic number 65, terbium, terabyte, tuberculosis, terabit, tebibyte