| Noun | 1. | terabyte - a unit of information equal to 1000 gigabytes or 10^12 (1,000,000,000,000) bytes computer memory unit - a unit for measuring computer memory |
| 2. | terabyte - a unit of information equal to 1024 gibibytes or 2^40 (1,099,511,627,776) bytes computer memory unit - a unit for measuring computer memory |