International Commission on Irrigation & Drainage Commission Interationale des Irrigation et du Drainage

Multilingual Technical Dictionary (MTD)
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Term No.Term NameTerm Description
1628R horizonA layer of continuous indurated rock, sufficiently cohesive when moistened as to make hand digging with a spade impracticable......
3178Rabi and monsoon sections of a canalThese terms are used in Indian sub-continent. The `rabi section` is the cross-sectional area of a canal in which assured supply is available for matur.....
3985Rabi crop (Bangladesh, India and Pakistan)Winter crop......
2692RaceThe channel that leads water to or from a water wheel or water turbine such as head race or tail race......
6317RadarProcess or equipment that uses the reflection of beamed, repeated and timed electromagnetic-magnetic radiation to detect, locate and / or quantify obj.....
5347Radial drainage patternDrainage pattern resembling the spokes of a wheel in which drainage channels flow radially either outward from a peak or inward toward a basin......
5431Radial flow pumpA centrifugal type pump in which the pressure for the circulating water is developed principally by action of centrifugal force......
3930Radial flow turbineA type of turbine in which the path of any particle of water in its flow through the runner lies substantially in a plane perpendicular to the axis of.....
2933Radial gate, or Tainter gateA gate that may be pivoted or hinged with a water face that is usually arc with the centre of curvature at the pivot and water load is transferred thr.....
2972Radial lock gatesA radial gate used in a lock. It is required to be raised high enough to provide necessary clearance to the passing traffic......
4184Radial well, Ranney well, or Collector well A variation of strainer well; in this case the strainers are driven horizontally in the water-bearing strata, radiating from a central sump or open we.....
4517Radial-flow pumpA pump in which fluid enters the rotating impeller near the axis of rotation and discharges with a combined radial and tangential motion......
3579Radial-gate spillwayOverflow spillway utilizing radial gates; when automatic, will automatically open or close with the rise or fall of the water surface in the canal......
7230Radioactive decayDisintegration of the nucleus of unstable nuclides by spontaneous emission of charged particles and/or photons......
7238Radioactive tracerRadioactive material detectable by its nuclear radiation; useful for tracing sources of water, even at very low concentrations.  .....
6262Radioactive tracerMaterial detectable by its emitted ionizing radiation and suitable for water tracing even at very low concentrations......
7239Radioactive wasteAny waste that contains radioactive material; especially  in concentrations that  exceed amounts allowed by law.  .....
7226RadioecologyThe study of the effects of radiation on plants and animals in natural communities......
7227RadioisotopesRadioactive forms of chemical compounds......
7229RadionuclidesAny nuclide that emits radiation......
4218Radius of a wellThe radius of the inside of the well casing or screen, or the radius of the bore hole for an uncased well (illustrated)......
4239Radius of influenceThe radius of the circle of influence (illustrated)......
3853Raft foundationA layer of concrete, usually reinforced, extending under the whole area of columns, piers and abutments and projecting outside their base periphery; u.....
4681RailingAgricultural method of brush removal from a field using a tractor-drawn railway rail......
773RainPrecipitation in the form of liquid water drops greater than 0.5 mm......
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The Multilingual Technical Dictionary (MTD) is an e-dictionary of all technical terms related to irrigation, drainage, flood management, environment, river training, and allied disciplines of the water sector. Any term/ definition can be printed/copied with the option to download/updates of terms from the ICID website. The MTD enriches the process of sharing and exchange of experiences and has proven to be highly useful for engineers, researchers, students, professionals, planners, designers, academics and all others related to the field of irrigation and drainage.  It is more helpful for professionals outside the water sector, in simplifying the technical jargon and to understand the sectoral nuances easily. 

As part of ICID's flagship activity, it was first published in English and French languages in 1967, the – 4th  edition of the MTD (English-French) was brought out on CD-ROM in the year 2002. Currently, we are following the 5th  edition released in 2009, which defines 9,370 technical terms in Chinese, Japanese and Russian, besides English and French. This online version of MTD is based on the 5th edition's DVD format. This version includes 9370 technical terms with matching English and French translation. The DVD version also includes terms collected in Chinese, Japanese and Russian languages with the active support received from respective National Committees. However, full integration with online versions has not taken place due to the difference in available translation editions/ versions. National Committees of Iran, China, Japan, Russia, Korea, and India are working on the translation/  updating part to match the present online version.

 

The DVD version of the Multilingual Technical Dictionary (MTD) is available for download through the 'Members only' section. After installation, please download the MTD 2.0a Update Patch (2002 version) and update the required files as suggested in the Patch before running the application.

 

MTD 2.0a  Update Patch

This update is for the users of MTD 2.0 who are working on a French Windows Operating System.

Please download the .jar file (icidmtd.jar [126 KB]) and replace the existing file installed in your C:\Program Files\icid-mtd\lib folder.

C:>cd\progra~1\icid-mtd\lib
C:\Program Files\ICID-MTD\LIB