Meaning of treated

(adj) subjected to a physical (or chemical) treatment or action or agent; "the sludge of treated sewage can be used as fertilizer"; "treated timbers resist rot"; "treated fabrics resist wrinkling"

given medical care or treatment; "a treated cold is usually gone in 14 days; if left untreated it lasts two weeks"

made hard or flexible or resilient especially by heat treatment; "a sword of tempered steel"; "tempered glass"