Noun | 1. | otitis - inflammation of the ear inflammation, redness, rubor - a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat labyrinthitis, otitis interna - inflammation of the inner ear; can cause vertigo and vomiting otitis externa - inflammation of the external ear (including auricle and ear canal) otitis media - inflammation of the middle ear; common in children |