Pneumonic typically refers to conditions related to the lungs, often associated with pneumonia, an infection that inflames the air sacs in one or both lungs. It can also refer to pneumonic plague, a severe form of plague caused by the bacterium Yersinia pestis, which affects the lungs and can be transmitted through respiratory droplets. The term can also relate to Mnemonic Devices that aid memory, but in a medical context, it primarily pertains to respiratory issues.