Longman Dictionary of Contemporary English homepage

untreated

 adjective
     
Related topics: Medicine, Illness and Disability, Technology
un‧treat‧ed
1M an untreated illness or injury has not had medical treatment
2T harmful substances that are untreated have not been made safe:
untreated sewage
3 untreated wood has not had any substances put on it to preserve it
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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