adjective

1. of, like, or affecting the lungs
2. having lungs or lunglike organs
3. designating the artery conveying blood from the right ventricle of the heart to the lungs or any of the veins conveying oxygenated blood from the lungs to the left atrium of the heart

Etymology: L pulmonarius < pulmo (gen. pulmonis), lung < IE *pleumon, lung, orig., floater < base *pleu-, to swim, float > flow: for semantic development see lights