1. Subjected to a physical (or chemical) treatment, action or agent
   "treated fabrics resist wrinkling"; "the sludge of treated sewage can be used as fertilizer"; "treated timbers resist rot"
    
2. Given medical care or treatment
   "a treated cold is usually gone in 14 days; if left untreated it lasts two weeks"
    
3. Made hard, flexible or resilient especially by heat treatment
   "a sword of treated steel";
   - tempered, hardened, toughened

1. Interact with or behave towards someone in a particular way
   "Treat him with caution, please";
   - handle, do by [Brit]
    
2. Subject to a process or treatment, with the aim of readying for some purpose, improving, or remedying a condition
   "treat the water so it can be drunk"; "treat an oil spill";
   - process
    
3. Provide treatment for
   "The doctor treated my broken leg"; "The patient must be treated right away or she will die"; "Treat the infection with antibiotics";
   - care for
    
4. Act on verbally or in some form of artistic expression
   "The new book treats the history of China";
   - cover, handle, plow [N. Amer], deal, address, plough [Brit, Cdn]
    
5. Regard or consider in a specific way
   "I treated his advances as a joke"
    
6. Engage in negotiations in order to reach an agreement
   "they had to treat with the King"
    
7. Provide with a gift or entertainment
   "Grandmother always treated us to the circus"; "I like to treat myself to a day at a spa when I am depressed"
    
8. Provide with choice or abundant food or drink
   "Don't worry about the expensive wine — I'm treating"; "She treated her houseguests with good food every night";
   - regale

See also: activated, aerated, bandaged, bound, burned, burnt, curable, doped, dosed, dressed, fumed, processed, proofed, sunbaked

Type of: affect, bear on, bear upon, broach, cater, gift, give, impact, initiate, interact, negotiate, present, provide, put up, react, reply, respond, supply, talk terms

Antonym: unhardened, untreated

Encyclopedia: Treat, Lawrence