Rhinitis/raɪˈnaɪtɪs/ Definition 1 of 1Pro Tip 1/3Medical Condition Rhinitis is used when talking about health and symptoms affecting the nose. During my check-up, the doctor told me I have rhinitis. Pro Tip 2/3Technical Term Rhinitis is not casual language; it's more common in medical discussions or readings. The patient was diagnosed with severe rhinitis. Pro Tip 3/3Allergy-Related Often rhinitis is discussed in the context of allergies, typically caused by pollen. My allergic rhinitis flares up during spring.