ter ‧ a ‧ byte /ˈterəbaɪt/ BrE AmE noun [countable] ( written abbreviation TB or Tb )
[ Date: 1900-2000 ; Language: Greek ; Origin: teras 'large creature, monster' + English byte ]
a unit for measuring computer information, equal to 1,024 ↑ gigabyte s , and used less exactly to mean one ↑ trillion ↑ byte s