un‧treat‧ed /ʌnˈtriːtəd, ʌnˈtriːtɪd/ adjective
[Word Family: noun: treat, treatment, mistreatment; verb: treat, mistreat; adjective: untreated, treatable]

1. an untreated illness or injury has not had medical treatment

2. 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

[TahlilGaran] Dictionary of Contemporary English ▲