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v. treat·ed, treat·ing, treats
1. To act or behave in a specified manner toward: treated me fairly.
2. To regard and handle in a certain way. Often used with as: treated the matter as a joke.
3. To deal with in writing or speech; discuss: a book that treats all aspects of health care.
4. To deal with or represent artistically in a specified manner or style: treats the subject poetically.
a. To provide with food, entertainment, or gifts at one's own expense: treated her sister to the theater.
b. To give (someone or oneself) something pleasurable: treated herself to a day in the country.
6. To subject to a process, action, or change, especially to a chemical or physical process or application: treated the cloth with bleach.
a. To give medical aid to (someone): treated many patients in the emergency room.
b. To give medical aid to counteract (a disease or condition): treated malaria with quinine.
1. To deal with a subject or topic in writing or speech. Often used with of: The essay treats of courtly love.
2. To pay for another's entertainment, food, or drink.
3. To engage in negotiations, as to reach a settlement or agree on terms: "Both sides nonetheless are quite willing to treat with [the king]" (Gregory J. Wallance).
1. Something, such as one's food or entertainment, that is paid for by someone else.
2. A source of a special delight or pleasure: His trip abroad was a real treat.

[Middle English tretien, from Old French traitier, from Latin tractāre, frequentative of trahere, to draw.]

treat′er n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.treater - someone who negotiates (confers with others in order to reach a settlement)treater - someone who negotiates (confers with others in order to reach a settlement)
communicator - a person who communicates with others
go-between, intercessor, intermediary, intermediator, mediator - a negotiator who acts as a link between parties
bargainer - negotiator of the terms of a transaction; "he is a hard bargainer"
compromiser - a negotiator willing to compromise; "Henry Clay was known as the Great Compromiser"
holdout - a negotiator who hopes to gain concessions by refusing to come to terms; "their star pitcher was a holdout for six weeks"
negotiatress, negotiatrix - a woman negotiator
representative - a person who represents others
settler - a negotiator who settles disputes
References in classic literature ?
And had they broke it open in their first fury, he had, without doubt, been torn to pieces without mercy; and this only because he was a treater in the Commission to England, for, before that, no man was so well beloved as he, over the whole city.
About one o'clock in the morning a battalion of the guards entered the town, marched up to the Parliament Close, and took post in all the avenues of the city, which prevented the resolutions taken to insult the houses of the rest of the treaters.
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Enercon's new CoronaFlex[TM] corona treater is designed for simple integration with all types of printing processes--including flexographic and digital inkjet.
Florida, US-based wood pressure treater Sunbelt Forest Products has acquired two pressure treated wood facilities from Southeast Wood Treating of Montgomery, Alabama, the company said.
One trick or treater, who witnessed the amazing scenes in Prestonpans, East Lothian, said: "Ian Black chased them in his car up to a nearby school and found the two boys.
EpicTilt Treater for those you didn't have time to shop: Treater's gift-giving app makes it easy for you send a little something via Facebook or email.
The more efficient a heat treater can be at feeding materials into the ovens, the better utilization it will obtain from its equipment.
A new plasma treating system has two treater heads that reportedly add flexibility while costing one-third less than two separate treaters.
11 on every trick or treater on average, but 5% of people spend pounds 10 or more on revellers knocking at their door.
Whether its playing Cajun classics like, "Joli Blond" and, "Back Door" or original songs like, "Everybody Zydeco" and, "Bayou Bogie" Treater 'heals' their audiences with their own brand of bayou bogie
This flame treater features PowerFlame[TM] technology and combines robust station construction; expert web handling; and an easy to operate, yet sophisticated combustion control system.