Of, affecting, or relating to the lungs; pulmonary.(adjective)
Relating to, affected by, or similar to pneumonia.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "pneumonic" in a sentence
"That was a different form of plague for the most part, a form of plague called pneumonic plague."
"The more fatal form is known as pneumonic plague, and in this the lungs are the seat of the disease."
"The pneumonic and septicemic were less seen than the bubonic."