gb meaning and definition

GB noun

Definition of GB (noun)

1. a highly toxic chemical nerve agent that inhibits the activity of cholinesterase
   • synonyms: sarin
2. a unit of magnetomotive force equal to 0.7958 ampere-turns
   • synonyms: Gi, gilbert
3. a unit of information equal to 1000 megabits or 10^9 (1,000,000,000) bits
   • synonyms: Gbit, gigabit
4. a unit of information equal to 1000 megabytes or 10^9 (1,000,000,000) bytes
   • synonyms: G, gigabyte
5. a unit of information equal to 1024 mebibytes or 2^30 (1,073,741,824) bytes
   • synonyms: G, GiB, gibibyte, gigabyte
6. an island comprising England and Scotland and Wales
   • synonyms: Great Britain