Definition of lye in English:


Line breaks: lye
Pronunciation: /lʌɪ


[mass noun]
  • A strongly alkaline solution, especially of potassium hydroxide, used for washing or cleansing.
    More example sentences
    • Sodium hydroxide, NaOH, also known as lye and caustic soda, is one of the most important of all industrial chemicals.
    • For example, sodium oxide dissolved in water yields sodium hydroxide, or lye.
    • To make the Biodiesel, we heated the oil, then mixed in a measured solution of methanol and lye.


Old English lēag, of Germanic origin: related to Dutch loog, German Lauge, also to lather.

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Pronunciation: kəːf
a slit made by cutting with a saw