A medical doctor who specializes in the diagnosis and treatment of allergies and asthma.
Early 20th century: from allergy + -ist.
- I am going to see the allergist for my hay fever.
- The allergist gave him a treatment plan for his food allergies.
- Allergist is a specialist that deals with allergies and asthma.
- She was referred to an allergist for her chronic hives.
- I need to make an appointment with an allergist to find out what I am allergic to.