the state of matter distinguished from the solid and liquid states by: relatively low density and viscosity; relatively great expansion and contraction with changes in pressure and temperature; the ability to diffuse readily; and the spontaneous tendency to become distributed uniformly throughout any container
a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely
attack with gas; subject to gas fumes; "The despot gassed the rebellious tribes"
having a cheerful, lively, and self-confident air; "looking chipper, like a man...diverted by his own wit"- Frances G. Patton; "life that is gay, brisk, and debonair"- H.M.Reynolds; "walked with a jaunty step"; "a jaunty optimist"