Definition of leach verb from the Oxford Advanced Learner's Dictionary

     

    leach

     verb
    verb
    BrE BrE//liːtʃ//
     
    ; NAmE NAmE//liːtʃ//
     
    (specialist)Verb Forms present simple I / you / we / they leach
    BrE BrE//liːtʃ//
     
    ; NAmE NAmE//liːtʃ//
     
    he / she / it leaches
    BrE BrE//ˈliːtʃɪz//
     
    ; NAmE NAmE//ˈliːtʃɪz//
     
    past simple leached
    BrE BrE//liːtʃt//
     
    ; NAmE NAmE//liːtʃt//
     
    past participle leached
    BrE BrE//liːtʃt//
     
    ; NAmE NAmE//liːtʃt//
     
    -ing form leaching
    BrE BrE//ˈliːtʃɪŋ//
     
    ; NAmE NAmE//ˈliːtʃɪŋ//
     
    Waste and pollution, Growing crops
     
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  1. 1[intransitive] leach (from something) (into something) | leach out/away (of chemicals, minerals, etc.) to be removed from soil, etc. by water passing through it Nitrates leach from the soil into rivers. See related entries: Waste and pollution, Growing crops
  2. 2[transitive] leach something (from something) (into something) | leach something out/away (of a liquid) to remove chemicals, minerals, etc. from soil The nutrient is quickly leached away.
  3. Word Origin Old English leccan ‘to water’, of West Germanic origin. The current sense dates from the mid 19th cent.
See the Oxford Advanced American Dictionary entry: leach