- electro-magnetic distance measuring instrument
- electromagnetic energy
- electromagnetic field of moving charged particle
- electromagnetic induction law
- electromagnetic momentum
- electromagnetic potentials
- electromagnetic radiation
- electromagnetic spectrum
- electromagnetic vibration
- electromagnetic wave
- electromagnetic wave
- electronic numerical integrator and calculator computer
- electronic plane-table
- electronic total station
- electron pair annihilation neutrino process
- electro-optical distance measuring instrument
- elegant graph
- elegant labeling
- element
- elementarily equivalent
- elementary Abelian group
- elementary algebra
- elementary cardinal number
- elementary catastrophe
- elementary chain