lye
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(lī) 
n.
n.
- The liquid obtained by leaching wood ashes.
- See potassium hydroxide.
- See sodium hydroxide.
[Middle English lie, from Old English lēag.]
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Alkaline ( alkali) liquid extracted by soaking wood ashes in water, commonly used for washing and in making soap. More generally, lye is any strong alkaline solution or solid, such as sodium hydroxide (caustic soda) or potassium hydroxide (caustic potash).
For more information on lye, visit Britannica.com.
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lye, name commonly used for a strongly alkaline solution. It originally meant a solution of potassium carbonate (potash) prepared by leaching wood ashes with water, but now the name also means a solution of sodium hydroxide or potassium hydroxide. Lye is also used to refer to the undissolved solute. Common household lye is usually sodium hydroxide. Lye should be used with caution as it is caustic and poisonous.
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An alkaline percolate from wood ashes; household lye is a crude mixture of sodium hydroxide with some sodium carbonate.
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