Definition of leach in English:

leach

verb liːtʃlitʃ

1with adverbial of direction (with reference to a soluble chemical or mineral) drain away from soil, ash, or similar material by the action of percolating liquid, especially rainwater.
with object the nutrient is quickly leached away
no object pesticides and fertilizers that leach into rivers
Example sentencesExamples
- If rainfall or irrigation is excessive, nitrate will be leached below the plant?
- In Australia, Mangareva, parts of the U.S. Southwest, and many other locations, most of the nutrients had already been leached out of the soil by rainfall.
- One drawback of organic-based products is the tendency of chemicals to leach from the matrix material, leaving parts of the surface unprotected.
- Humus being highly colloidal, has the ability to adsorb and retain for future plant use many of the ions such as calcium, magnesium, potassium, phosphates and ammonia which might be leached from the soil and lost in drainage.
- The key, once you've cleared a patch of ground, is to get something sown or planted to fill the vacuum: otherwise the winter wet will leach nutrients from the soil, and the weeds will undo your good work in a matter of weeks.
- Soluble minerals are leached from soils on upper slopes, move down the slope, and are often deposited at the foot of the slope.
- It will stop rain leaching nutrients from the soil over the winter, and as it rots down it will improve the soil's texture and fertility quite naturally.
- In the processes generally known as bioleaching, stress-hardy bacteria, which can get all their nutrient requirements from the air and the minerals to be leached, are typically employed to oxidise ores to a more soluble state.
- The small chloride ion can also sometimes work its way past protective coatings and leach out soluble iron chloride salts, exposing new surfaces for attack.
- #6 Polystyrene can leach styrene, a possible human carcinogen that may also interfere with hormones.
- The other attraction of these materials, which were developed in the 1970s, is that they continuously leach fluoride and so can help reduce the incidence of recurrent caries.
- Polyurethane is a fully reacted polymer in which every molecule bonds with another so it is chemically inert, which keeps it from oxidizing or leaching chemicals, theoretically extending tire life.
- When they looked at the data from their 1995-2001 study and saw how much nitrate was being leached from the soil, they realized just how important it is to manage drainage systems carefully.
- More recently they have speculated that acid rain robs trees of this vital nutrient by leaching it from the soil and by mobilizing aluminum, which interferes with calcium uptake by roots.
- The sort of feed may have to change, because the wetter winters will probably result in nutrients being leached out of the soil at a faster rate.
- This, combined with nutrients being leached out of the soils by high rainfall, may cause weakness in some plants and nutrient deficiency, particularly in sandy soils.
- He concluded that the pseudomorphs were derived when rainwater penetrating the near-surface layers leached out the sodium carbonate from the original shortite, leaving behind calcium carbonate.
- Brackish and ocean waters may contain large quantities of sodium chloride as well as many other soluble compounds leached from the crust of the earth.
- The pad is used to store a mound of ore through which chemicals percolate to leach out the gold ore, which is then collected and processed into bullion.
- Precious metals, such as platinum and gold, which may be present on the PCB, can also be leached and recovered electrochemically and reused.
Synonyms
drain, filter, percolate, filtrate, discharge, strain, leak, separate
trickle, dribble, drip, ooze, seep
rare osmose, lixiviate
1. 1.1with object Subject (soil, ash, etc.) to a leaching process.
  ash is readily leached
  Example sentencesExamples
  Millions of people in the Himalayas and Andes suffer from goitre and cretinism as glaciation, heavy rainfall and melting snow regularly leach mountain soils of their iodine content.
  Both field evidence and binocular microscope inspection of the sediment from East Avenue Range indicate that the sediment is highly leached.

Origin

Old English leccan 'to water', of West Germanic origin. The current sense dates from the mid 19th century.

Rhymes

beach, beech, beseech, bleach, breach, breech, each, impeach, leech, outreach, peach, pleach, preach, reach, screech, speech, teach

Definition of leach in US English:

leach

verblēCHlitʃ

1(with reference to a soluble chemical or mineral) drain away from soil, ash, or similar material by the action of percolating liquid, especially rainwater.
with object the nutrient is quickly leached away
no object pesticides that leach into rivers
Example sentencesExamples
- One drawback of organic-based products is the tendency of chemicals to leach from the matrix material, leaving parts of the surface unprotected.
- He concluded that the pseudomorphs were derived when rainwater penetrating the near-surface layers leached out the sodium carbonate from the original shortite, leaving behind calcium carbonate.
- If rainfall or irrigation is excessive, nitrate will be leached below the plant?
- More recently they have speculated that acid rain robs trees of this vital nutrient by leaching it from the soil and by mobilizing aluminum, which interferes with calcium uptake by roots.
- The pad is used to store a mound of ore through which chemicals percolate to leach out the gold ore, which is then collected and processed into bullion.
- Polyurethane is a fully reacted polymer in which every molecule bonds with another so it is chemically inert, which keeps it from oxidizing or leaching chemicals, theoretically extending tire life.
- Brackish and ocean waters may contain large quantities of sodium chloride as well as many other soluble compounds leached from the crust of the earth.
- The small chloride ion can also sometimes work its way past protective coatings and leach out soluble iron chloride salts, exposing new surfaces for attack.
- The other attraction of these materials, which were developed in the 1970s, is that they continuously leach fluoride and so can help reduce the incidence of recurrent caries.
- In the processes generally known as bioleaching, stress-hardy bacteria, which can get all their nutrient requirements from the air and the minerals to be leached, are typically employed to oxidise ores to a more soluble state.
- In Australia, Mangareva, parts of the U.S. Southwest, and many other locations, most of the nutrients had already been leached out of the soil by rainfall.
- Precious metals, such as platinum and gold, which may be present on the PCB, can also be leached and recovered electrochemically and reused.
- This, combined with nutrients being leached out of the soils by high rainfall, may cause weakness in some plants and nutrient deficiency, particularly in sandy soils.
- It will stop rain leaching nutrients from the soil over the winter, and as it rots down it will improve the soil's texture and fertility quite naturally.
- #6 Polystyrene can leach styrene, a possible human carcinogen that may also interfere with hormones.
- Humus being highly colloidal, has the ability to adsorb and retain for future plant use many of the ions such as calcium, magnesium, potassium, phosphates and ammonia which might be leached from the soil and lost in drainage.
- The key, once you've cleared a patch of ground, is to get something sown or planted to fill the vacuum: otherwise the winter wet will leach nutrients from the soil, and the weeds will undo your good work in a matter of weeks.
- When they looked at the data from their 1995-2001 study and saw how much nitrate was being leached from the soil, they realized just how important it is to manage drainage systems carefully.
- Soluble minerals are leached from soils on upper slopes, move down the slope, and are often deposited at the foot of the slope.
- The sort of feed may have to change, because the wetter winters will probably result in nutrients being leached out of the soil at a faster rate.
Synonyms
drain, filter, percolate, filtrate, discharge, strain, leak, separate
1. 1.1with object Subject (soil, ash, etc.) to a leaching process.
  Example sentencesExamples
  Millions of people in the Himalayas and Andes suffer from goitre and cretinism as glaciation, heavy rainfall and melting snow regularly leach mountain soils of their iodine content.
  Both field evidence and binocular microscope inspection of the sediment from East Avenue Range indicate that the sediment is highly leached.

Origin

Old English leccan ‘to water’, of West Germanic origin. The current sense dates from the mid 19th century.

单词	leach
释义	Definition of leach in English: leach verb liːtʃlitʃ 1with adverbial of direction (with reference to a soluble chemical or mineral) drain away from soil, ash, or similar material by the action of percolating liquid, especially rainwater. with object the nutrient is quickly leached away no object pesticides and fertilizers that leach into rivers Example sentencesExamples If rainfall or irrigation is excessive, nitrate will be leached below the plant? In Australia, Mangareva, parts of the U.S. Southwest, and many other locations, most of the nutrients had already been leached out of the soil by rainfall. One drawback of organic-based products is the tendency of chemicals to leach from the matrix material, leaving parts of the surface unprotected. Humus being highly colloidal, has the ability to adsorb and retain for future plant use many of the ions such as calcium, magnesium, potassium, phosphates and ammonia which might be leached from the soil and lost in drainage. The key, once you've cleared a patch of ground, is to get something sown or planted to fill the vacuum: otherwise the winter wet will leach nutrients from the soil, and the weeds will undo your good work in a matter of weeks. Soluble minerals are leached from soils on upper slopes, move down the slope, and are often deposited at the foot of the slope. It will stop rain leaching nutrients from the soil over the winter, and as it rots down it will improve the soil's texture and fertility quite naturally. In the processes generally known as bioleaching, stress-hardy bacteria, which can get all their nutrient requirements from the air and the minerals to be leached, are typically employed to oxidise ores to a more soluble state. The small chloride ion can also sometimes work its way past protective coatings and leach out soluble iron chloride salts, exposing new surfaces for attack. #6 Polystyrene can leach styrene, a possible human carcinogen that may also interfere with hormones. The other attraction of these materials, which were developed in the 1970s, is that they continuously leach fluoride and so can help reduce the incidence of recurrent caries. Polyurethane is a fully reacted polymer in which every molecule bonds with another so it is chemically inert, which keeps it from oxidizing or leaching chemicals, theoretically extending tire life. When they looked at the data from their 1995-2001 study and saw how much nitrate was being leached from the soil, they realized just how important it is to manage drainage systems carefully. More recently they have speculated that acid rain robs trees of this vital nutrient by leaching it from the soil and by mobilizing aluminum, which interferes with calcium uptake by roots. The sort of feed may have to change, because the wetter winters will probably result in nutrients being leached out of the soil at a faster rate. This, combined with nutrients being leached out of the soils by high rainfall, may cause weakness in some plants and nutrient deficiency, particularly in sandy soils. He concluded that the pseudomorphs were derived when rainwater penetrating the near-surface layers leached out the sodium carbonate from the original shortite, leaving behind calcium carbonate. Brackish and ocean waters may contain large quantities of sodium chloride as well as many other soluble compounds leached from the crust of the earth. The pad is used to store a mound of ore through which chemicals percolate to leach out the gold ore, which is then collected and processed into bullion. Precious metals, such as platinum and gold, which may be present on the PCB, can also be leached and recovered electrochemically and reused. Synonyms drain, filter, percolate, filtrate, discharge, strain, leak, separate trickle, dribble, drip, ooze, seep rare osmose, lixiviate 1.1with object Subject (soil, ash, etc.) to a leaching process. ash is readily leached Example sentencesExamples Millions of people in the Himalayas and Andes suffer from goitre and cretinism as glaciation, heavy rainfall and melting snow regularly leach mountain soils of their iodine content. Both field evidence and binocular microscope inspection of the sediment from East Avenue Range indicate that the sediment is highly leached. Origin Old English leccan 'to water', of West Germanic origin. The current sense dates from the mid 19th century. Rhymes beach, beech, beseech, bleach, breach, breech, each, impeach, leech, outreach, peach, pleach, preach, reach, screech, speech, teach Definition of leach in US English: leach verblēCHlitʃ 1(with reference to a soluble chemical or mineral) drain away from soil, ash, or similar material by the action of percolating liquid, especially rainwater. with object the nutrient is quickly leached away no object pesticides that leach into rivers Example sentencesExamples One drawback of organic-based products is the tendency of chemicals to leach from the matrix material, leaving parts of the surface unprotected. He concluded that the pseudomorphs were derived when rainwater penetrating the near-surface layers leached out the sodium carbonate from the original shortite, leaving behind calcium carbonate. If rainfall or irrigation is excessive, nitrate will be leached below the plant? More recently they have speculated that acid rain robs trees of this vital nutrient by leaching it from the soil and by mobilizing aluminum, which interferes with calcium uptake by roots. The pad is used to store a mound of ore through which chemicals percolate to leach out the gold ore, which is then collected and processed into bullion. Polyurethane is a fully reacted polymer in which every molecule bonds with another so it is chemically inert, which keeps it from oxidizing or leaching chemicals, theoretically extending tire life. Brackish and ocean waters may contain large quantities of sodium chloride as well as many other soluble compounds leached from the crust of the earth. The small chloride ion can also sometimes work its way past protective coatings and leach out soluble iron chloride salts, exposing new surfaces for attack. The other attraction of these materials, which were developed in the 1970s, is that they continuously leach fluoride and so can help reduce the incidence of recurrent caries. In the processes generally known as bioleaching, stress-hardy bacteria, which can get all their nutrient requirements from the air and the minerals to be leached, are typically employed to oxidise ores to a more soluble state. In Australia, Mangareva, parts of the U.S. Southwest, and many other locations, most of the nutrients had already been leached out of the soil by rainfall. Precious metals, such as platinum and gold, which may be present on the PCB, can also be leached and recovered electrochemically and reused. This, combined with nutrients being leached out of the soils by high rainfall, may cause weakness in some plants and nutrient deficiency, particularly in sandy soils. It will stop rain leaching nutrients from the soil over the winter, and as it rots down it will improve the soil's texture and fertility quite naturally. #6 Polystyrene can leach styrene, a possible human carcinogen that may also interfere with hormones. Humus being highly colloidal, has the ability to adsorb and retain for future plant use many of the ions such as calcium, magnesium, potassium, phosphates and ammonia which might be leached from the soil and lost in drainage. The key, once you've cleared a patch of ground, is to get something sown or planted to fill the vacuum: otherwise the winter wet will leach nutrients from the soil, and the weeds will undo your good work in a matter of weeks. When they looked at the data from their 1995-2001 study and saw how much nitrate was being leached from the soil, they realized just how important it is to manage drainage systems carefully. Soluble minerals are leached from soils on upper slopes, move down the slope, and are often deposited at the foot of the slope. The sort of feed may have to change, because the wetter winters will probably result in nutrients being leached out of the soil at a faster rate. Synonyms drain, filter, percolate, filtrate, discharge, strain, leak, separate 1.1with object Subject (soil, ash, etc.) to a leaching process. Example sentencesExamples Millions of people in the Himalayas and Andes suffer from goitre and cretinism as glaciation, heavy rainfall and melting snow regularly leach mountain soils of their iodine content. Both field evidence and binocular microscope inspection of the sediment from East Avenue Range indicate that the sediment is highly leached. Origin Old English leccan ‘to water’, of West Germanic origin. The current sense dates from the mid 19th century.
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