adjective
1. subjected to a physical (or chemical) treatment or action or agent (Freq. 2)
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the sludge of treated sewage can be used as fertilizer
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treated timbers resist rot
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treated fabrics resist wrinkling
• Ant: ↑untreated
• Similar to:
• See Also: ↑processed
2. given medical care or treatment
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a treated cold is usually gone in 14 days; if left untreated it lasts two weeks
• Ant: ↑untreated
3. made hard or flexible or resilient especially by heat treatment
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a sword of tempered steel
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tempered glass
• Ant: ↑untempered (for: ↑tempered)
Useful english dictionary. 2012.