(uncountable) Molecular nitrogen (N2), a colorless, odorless gas at room temperature. (countable) A specific nitrogen within a chemical formula, or a specific isotope of nitrogen The two nitrogens are located next to one another on the ring.
An allergist specializes in allergies, asthma, and allergic asthma. Internist. An internist is a doctor who specializes in internal medicine -- the study of diseases in adults, particularly those related to internal organs -- and who has completed three years of training after medical school. Pediatrician.
A pulmonologist is a medical doctor who specializes in treating disorders related to the lungs and respiratory system.He or she analyzes diagnostic tests, researches symptoms, consults with other professionals, and administers appropriate treatments. pulmonologist is a medical doctor who specializes in treating disorders related to the lungs and respiratory system.