equa - expe
- equal degree
- equal-discharge-increments
- equal-discharge-increments method
- equal-width-increments
- equal-width-increments method
- equalization basin
- equalization lagoon
- equalized waste
- equalizing basin
- equalizing drainage
- equalizing reservoir
- equalizing storage
- equalizing tank
- equation of ocean state
- equatorial air
- equatorial depression
- equatorial electrojet
- Equatorial Expedition for the International Years of the Quiet Sun
- equatorial forest
- equatorial front
- equatorial latitudes
- Equatorial Pacific Ocean Climate Study
- equatorial rain forest
- equatorial zone
- equidistance principle
- equilibrium ozone concentration
- equipment for radioactive wastes
- equipment of hydraulic structures
- equitable apportionment
- equivalent biochemical oxygen demand
- equivalent bod
- equivalent continuous perceived noise level
- equivalent dose
- equivalent sound level in decibels
- ER
- eradiation
- eradicant
- ERB
- ERBE
- ERBSS