noun
- a person who treats or provides treatment, especially medical treatment
- a person who pays for someone else’s food, drinks, or entertainment
Usage: informal
Examples
- The hospital hired a new treater for the emergency department.
- As the primary treater, she monitored the patient’s progress daily.
- He was always the treater when we went out for dinner.
- Being the treater at the party made him feel generous.
- The treater explained the treatment options to the family.
- She insisted on being the treater for her friend’s birthday celebration.