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
6202OffsetThe difference between the target value of the variable and the actual value......
3317Offtake canalA canal that takes water from another canal......
3439Offtake regulator, Intake structure, Turnout, or Head of offtake1 - A structure built at the head of an offtaking branch or distributary channel to control and admit regulated supplies into it from the parent canal.....
2747OgeeA reversed curve shaped like an elongated letter `S`. The downstream faces of overflow dams are often made in this shape See `Ogee weir`......
2305Ogee weirA weir having a crest with an ogee shape (See 2747)......
5822Ohio (river)-type coffer damA double-wall timber sheeted coffer dam constructed during low velocities in the river in a unique manner as on the Ohio river (USA). The sheeting is .....
5788Oil paintsPaints when oil serves as vehicle......
2100Older peatOld, highly decomposed peat of raised moss......
7140OligodynamicHaving the power to kill organisms by means of a minute concentration of heavy metals.  .....
7688Oligomictic lake A warm‑water lake whose water temperature is considerably higher than 4 C the year round......
6992OligophagousEating only a few types of food......
7050Oligosaprobic1 - A body of water which has only a small number of saprophytes, saprozoic and polysaprobic organisms. 2 - A moderately oxygenated environment in whi.....
6862OligothermalAble to tolerate only a range of low temperatures.  .....
9345Oligotrophic1 - Relatively unproductive areas of the sea, lakes, and rivers with low nutrient content. 2 – See 7695 and 7700......
7695Oligotrophic 1 - Referring to a water body low in nutrient supplies. Such water bodies contain little organic matter, have a high dissolved oxygen level, and low n.....
6993Omnivorous, or OmnivoreEating both plants and animals......
9066On-costsCosts made up by listing to the contractor the actual cost of all the preliminaries and ancillary works, such as the transport, erection and dismantli.....
8235On-line1 - Descriptive of a system and peripheral equipment or devices in a system in which the operation of such equipment is under control of the central p.....
6280On-line data processingThe complete operation of the demodulation or demultiplexing, linearization, and automatic computation of data as it is being received......
7461Onchocerciasis Also known as river blindness; common in tropical regions of Africa and America; caused by infestation by a filarial worm (especially Onchocerca volvu.....
7488Oncogenic Causing tumors......
211One-sided confidence intervalWhen T is a function of the observed values, such that q being a population parameter to be estimated, the probability Pr (T * q) or the probability P.....
192One-sided test, One-tail test, or Single tail testA test of a hypothesis when the region of rejection is wholly located at one end of the distribution of the test statistic, e.g. when the alternative .....
1819One-third atmosphere percentageThe moisture retained in an air-dried sample of soil that has been wetted and then brought to equilibrium on a permeable membrane. It closely approxim.....
5338Open Archimedes screw1 - Lifting device that is used in drainage pumping stations, especially when the inside and outside water levels are more or less stable. 2 - See 443.....
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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