pneu·mon·ic \(ˈ)n(y)ü|mänik, nəˈm-\adjective Etymology: New Latin pneumonicus, from Greek pneumonikos, from pneumon- + -ikos -ic 1.: of or relating to the lungs : pulmonic 2.: of, relating to, or affected with pneumonia < a pneumonic lung > < a pneumonic condition is also a frequent terminal state — K.F.Maxcy >