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

Multilingual Technical Dictionary (MTD)
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Term No.Term Name/Term DescriptionAction
146
Bimodal distribution
A frequency distribution with two modes.
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167
Multimodal distribution
A frequency distribution with more than one modal value.
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176
Unimodal
An adjective describing a frequency distribution having a single mode.
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585
Foot Poundals
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586
Foot Poundals
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587
Foot Poundals
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588
Foot Poundals
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647
Poundals
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648
Poundals
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649
Poundals
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650
Poundals
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651
Poundals
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983
Belt of soil water
The part of the zone of aeration that consists of soil and other materials that lie near enough to the surface to discharge water into the atmosphere in perceptible quantities by the transpiration of plants or by evaporation from the soil......
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1033
Interstice, or Void (in a rock, or soil)
A space in a rock or soil, that is not occupied by solid matter.
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1299
Tidal flats
Areas of nearly flat, barren mud periodically covered by tidal waters.
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1301
Intertidal zone
The area of a shore between the levels of a high and low tide.
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1305
Profundal
The deepest part of the ocean or lake where light does not penetrate;   characteristically low in nutrients, with much silt and few organisms as compared with the surface......
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1327
Tidal river
A river in which flow and water surface slope are affected by tides. In some rivers, the effect may extend a hundred miles or more upstream from the mouth, sufficient to even temporarily reverse the direction of flow of the stream......
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1364
Well graded soil
A continuous distribution of grain sizes from the coarsest to the finest components in a proportions that the successively smaller size grains just fill the spaces between the larger grains......
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1519
Bandal
A fascine consisting of a framework with bamboos, etc., driven into the river bed, say 60 cm apart with horizontal ties and supported by struts placed at every 120 cm and a screen or mat of split bamboos (illustrated)......
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1520
Bandalling
A system of river training in India by means of bandals designed to confine the low water flow in a single channel for maintaining a suitable depth for navigation, as also for enabling a greater head for irrigation......
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1584
Soil Science
The science dealing with soil as a natural resource on the surface of the earth including soil formation, classification, mapping, the mineralogical, physical, chemical, biological and fertility properties of soil; also, in relation to their management and soil conservation for crop production......
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1585
Soil
The soil is a natural body of mineral and organic constituents, differentiated into horizons, of variable depth, which differs from the material below in morphology, physical make-up, chemical properties and composition, and biological characteristics. In agricultural soil science, the term soil is applied only to the thin upper part of the mantle .....
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1592
Soil morphology
The physical constitution of soil including the texture, structure, porosity, consistency and colour of the various soil horizons, their thickness and their arrangement in the soil profile......
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1597
Mature soil
A soil with well-developed soil horizons produced by natural processes of soil formation and essentially in equilibrium with its present environment......
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