Treated or disinfected with carbolic acid (phenol), a chemical used as an antiseptic and disinfectant.
From carbolic (relating to carbolic acid) + -ise (British spelling suffix meaning to treat or process). Carbolic itself comes from carbon + -ol (chemistry suffix). The term emerged in the 19th century when carbolic acid became popular for medical disinfection.
Carbolic acid was so revolutionary for surgery in the 1860s that Joseph Lister used it to spray operating rooms, making carbolic-treated instruments and bandages a symbol of modern medicine—though we now know it's actually pretty toxic if used improperly!
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