Etymology
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lysol (n.)

brown oily coal-tar solution used as a disinfectant, 1890, coined, perhaps in German, from Greek lysis "dissolution, dissolving" (from lyein "to unfasten, loose, loosen, untie," from PIE root *leu- "to loosen, divide, cut apart") + -ol, element indicating "oil."

updated on May 08, 2017

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Definitions of lysol from WordNet

Lysol (n.)
a clear oily brown solution of cresols in soap; used as an antiseptic and disinfectant;
From wordnet.princeton.edu, not affiliated with etymonline.