pneumatic

pneu·mat·ic

adj \n(y)u̇-ˈmat-ik\

Definition of PNEUMATIC

: of, relating to, or using gas (as air): as a : moved or worked by air pressure b : adapted for holding or inflated with compressed air c : having air-filled cavities <pneumatic bone>

—pneu·mat·i·cal·ly \-i-k(ə-)lē\ adverb