Word
leach
US/ˈɫitʃ/
UK/lˈiːtʃ/
Definitions
01to wash out chemicals
v. to remove chemicals or minerals from a solid, like soil or rock, by passing water through it.
v. to extract a soluble constituent from a solid by the action of a percolating liquid.
“Heavy rain can cause nutrients to leach out of the soil, leaving it poor for farming.”
“If the landfill is not properly sealed, toxic chemicals may leach into the local groundwater and contaminate the drinking supply.”
Technical
Usage
Often used with 'out of', 'into', or 'through'.
Pitfall
The chemicals leached from the soil.
The chemicals leached out of the soil.
While 'leached from' is common, 'leached out of' is more precise when describing the movement of the substance away from its source.
02to lose gradually
v. to slowly lose a quality, feeling, or strength over time.
v. to drain away or be removed gradually; used figuratively to describe the loss of abstract qualities.
“The long, cold winter seemed to leach the energy from everyone in the village.”
“Years of corporate bureaucracy had leached the enthusiasm from the design team, leaving them cynical and uninspired.”
Literary
Teaching tip
This figurative use is common in high-level literature to describe a slow, exhausting loss of emotion or colour.
03a container for filtering
n. a container or tank used to wash chemicals out of materials like wood ash or bark.
n. a vat or vessel used for the process of leaching, particularly in traditional industries like tanning or soap-making.
“The old tannery used a large wooden leach to process the tree bark.”
“Archaeologists discovered a stone leach at the site, suggesting the inhabitants produced their own lye for soap production.”
Technical · Archaic
Real-World Examples
“Some ingredients may be added illegally, form due an unintended chemical reaction among ingredients or come from plastic packaging that often leaches compounds into the products, the authors wrote.” “The filings claimed the chemicals were leaching into groundwater near bases, from concrete, asphalt, soil or sediment into surface water and drains.” Domain
Scan code
englishreference.com/q/leach