- equilibrium temperature
- equilibrium valve
- equilong transformation
- equimeasurable function
- equimolecular
- equinoctial point
- equinoctial rain
- equinoctial year
- equinox
- equinox equilibrium
- equipage
- equiphase
- equipitential surface
- equipment
- equipment bay
- equipment centre
- equipment failure
- equipment fault
- equipment floor
- equipment manufacturer
- equipment operator
- equipment unit
- equipoise
- equipollence
- equiponderance
- equiponderant
- equiponderant state
- equipotential
- equipotential cathode
- equipotential line
- equipotential lines
- equipotential surface
- equipressure surface
- equispaced
- elliptic filter
- elliptic spring
- elliptical arch
- elongated
- elongation meter
- elongator
- elution
- elutriation
- embayment
- embedded command
- embedded pipe
- embedded scale
- embedded system
- embedding
- embellish
- emblematic
- embodiment
- emboss
- embossed
- embossed label
- embossed paper
- embossing machine
- embossing press
- embouchure
- embritlement
- embudment
- EMCW radar
- emer sharpener
- emerald
- emerge
- emerged reef
- emergency
- emergency breaking
- emergency bridge
- emergency cock
- emergency communication
- emergency dam
- emergency door
- emergency gallery
- emergency ladder
- emergency light
- emergency locomotive
- emergency passage
- emergency procedure
- emergency service
- emergency sign
- emergency state
- emergency telephone
- emergency valve
- emery
- emery cloth
- emery dust
- emery powder
- emery stick
- emery stone
- emf
- emigrate
- emigration
- eminence
- eminentia
- emission band
- emission phototube
- emission standard
- emit
- emitron camera
- emitter barrier