m
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gen. surface drainage agric. land drainage agric., construct. drainage operations ; compost drainage ; draining chem. dehydration coal. dewatering construct. site drainage ; highway drainage ; sub-soil-drainage ; drain ; duct ; flue econ. drainage environ. drainage 1. Removal of groundwater or surface water, or of water from structures, by gravity or pumping. 2. The discharge of water from a soil by percolation (the process by which surface water moves downwards through cracks, joints and pores in soil and rocks) forestr. drainage of forest land (de la forêt) industr., construct. wicking nat.res. drainage system ; drains ; seepage ; seeping swim. outlet of water
drainages m
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nucl.phys., ecol. waste water ; aqueous effluents ; liquid effluents ; residual water ; drains (after use by households, trade, or industry, also from nuclear installations, non-radioactive)
drainage souterrain m
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gen. subsurface drainage
