GB
| Noun | 1. | GB - a highly toxic chemical nerve agent that inhibits the activity of cholinesterase Synonyms: sarin |
| 2. | Gb - a unit of magnetomotive force equal to 0.7958 ampere-turns | |
| 3. | GB - a unit of information equal to one billion (1,073,741,824) bytes or 1024 megabytes | |
| 4. |  GB - a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland |
| 1. | (unit) | GB - gigabytes or gigabits - see MB. Giga stands for
10^9 - a US billion, or in computing for 2^30. The text of a thirty volume encyclopaedia would require about one gigabyte of ASCII storage. | |
| 2. | (unit) | Gb - Gigabit. 10^9 bits. Might also be wrongly used for gigabyte (GB). | |
| 3. | (networking) | gb - (Great Britain) A country code for United Kingdom. "uk" is generally used instead. |