| Term No. | Term Name | Term Description |
| 1625 | E Horizon | Is a mineral horizon showing a concentration of sand and silt fractions high in resistant minerals, resulting from a loss of silicate clay, iron or al..... |
| 8148 | E-commerce, Electronic commerce | The conducting of business communication and transactions over networks and through computers. It also includes all inter-company and intra-company fu..... |
| 4619 | Early irrigation (USA) | Watering carried out well in advance of planting if the moisture in the soil is not adequate to carry out the soil preparation process...... |
| 8060 | Early warning | The provision of timely and effective information, through identified institutions, that allows individuals exposed to a hazard to take action to avoi..... |
| 5444 | Earth | The softer materials of the lithosphere, specifically called soil in agricultural science and soil science, as distinguished from firm rock. Its basic..... |
| 5815 | Earth (dike)-coffer dam, or Earthfill coffer dam | A type of water coffer dam built entirely with earth materials protected by a revetment or by sand bags...... |
| 2356 | Earth dam, or Embankment dam | A barrier made of earth, clay, sand or sand and gravel, or a combination of these or of the earth and rock...... |
| 6145 | Earth loader | A machine consisting of a frame mounted on crawler tracks, a cutting blade, mouldboard plow, conveyor chute, conveyor belt, and an engine to operate t..... |
| 2627 | Earth pressure | The pressure or force exerted by retained earth (soil) on any surface or boundary or a wall that varies between two extremes...... |
| 6649 | Earth resources technology satellite (ERTS) | One of several unmanned, earth‑orbiting satellites equipped to scan the surface of the Earth to obtain information relating to natural resources and..... |
| 6404 | Earth-flow | A slow flow of earth lubricated with water, occurring as either a low-angle terrace flow or a somewhat steeper but slow hillside flow...... |
| 4766 | Earth, Earthing, Ground, or Grounding cable | A electrical conductor that connects metal parts, as of a center pivot irrigation system, directly to the earth. The cable is intended to eliminate t..... |
| 3176 | Earthen section | Section of an irrigation channel having boundaries comprising softer material of the lithosphere, such as silt, clay...... |
| 5497 | Earthenware | Pipes and other goods made from ordinary brick-earths, burnt but may be glazed or unglazed...... |
| 4277 | Earthfast | A well is said to be earthfast when the friction of the earth against the outside of the drum becomes so great as to stop its descent before the requi..... |
| 2591 | Earthquake factor | The percentage of gravity acceleration for which a structure is required to be designed...... |
| 7913 | Earthquake flood, or Tsunami | 1 - Flood in coastal areas or in low lying lands, caused by sea waves after a submarine earthquake or a volcanic eruption. 2 – See 2125 and 9364...... |
| 6651 | Earthwatch programme | A programme to assess global environmental trends in air, water, land and human health. Part of the Action Plan adopted by the United Nations Confer..... |
| 3845 | Ease-water, Fairing | The downstream nose of a pier shaped to promote smooth emergence of the water flowing out of the adjacent bays. There are many forms of ease-waters th..... |
| 2054 | Ebb current | Current due to flood (i.e. falling)...... |
| 2023 | Ebb tide | Tides during a period between high water and following low water...... |
| 8147 | EBCDIC | Extended Binary Coded Decimal Interchange Code, an 8-bit code developed by IBM for their mainframe computers, providing 256 bit-pattern equivalents of..... |
| 6947 | Ecdysis | Moulting...... |
| 7067 | Ecesis | Germination and establishment of colonizing plants...... |
| 1209 | Echo sounder | An instrument for determining the depth of water in a stream or lake. The time interval between the generation of acoustic signals and the return of t..... |
