treated

adjective

1
made hard or flexible or resilient especially by heat treatment
a sword of tempered steel
tempered glass
2
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
3
given medical care or treatment
a treated cold is usually gone in 14 days; if left untreated it lasts two weeks

Also useful for “treated”:Unscrambler— Rearrange the letters in “treated”