gian - guar
- GPS
- GPS pathfinder wristwatch
- GPS satellite
- GPSS
- GPU
- GPWS
- Gr
- grab
- grabber
- grabber hand
- grace note
- graceful degradation
- graceful exit
- graceful graph
- graceful numbering
- gradation
- grade
- grade of service
- graded base
- graded fiber
- graded filter
- graded heterojunction
- graded insulation
- graded junction
- graded potential
- graded resistivity base
- graded thermoelectric arm
- graded varactor
- graded-base transistor
- graded-gap heterojunction
- graded-index fiber
- graded-index optical waveguide
- graded-junction diode
- graded-junction transistor
- graded-junction varactor
- gradient
- gradient contrast
- gradient descent
- gradient drift
- gradient energy
