Also found in: Thesaurus.
1. (Medicine) (of an illness, etc) not having been dealt with
2. not having been processed in any way: untreated sewage.
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|Adj.||1.||untreated - not given medical care or treatment; "an untreated disease"; "the untreated wounded lay on makeshift cots"|
treated - given medical care or treatment; "a treated cold is usually gone in 14 days; if left untreated it lasts two weeks"
|2.||untreated - not subjected to chemical or physical treatment; "an untreated fabric"|
unprocessed - not altered from an original or natural state; "unprocessed commodities"
treated - 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"
|3.||untreated - (of a specimen for study under a microscope) not treated with a reagent or dye|
unstained - not stained; "An apron keeps his clothing unstained"