It means you get involved. Technically, our local forms of government are not participatory democracies. Officially, participatory democracy is direct democracy, in the sense that all citizens are actively involved in all important decisions.
It shouldn't if washed with gentle care. Rayon is a cellulose fabric and like most cellulose fabrics, it may shrink when washed. If the manufacturer has indicated the garment should be dry cleaned only, do not push your luck. If it is hand-washable though, you can use the gentle cycle on your washing machine and Woolite to get the job done.
Rayon is considered a man-made fiber, but it is not synthetic because it is made from naturally occurring materials, according to Fiber Source. It is referred to as a regenerated cellulose fiber. According to the fiber experts at Ohio State University, rayon is frequently misunderstood.