pneumonitis noun.
[nju:mǝ'nʌɪtɪs] E19.[mod. Latin, from Greek pneumōn lung + -ITIS.]Medicine. Inflammation of the walls of the alveoli in the lung; pneumonia, esp. caused by a viral or unknown agent.
■ pneumo'nitic adjective M19. [TahlilGaran] English Dictionary ▲