Precipitation type is a term used to describe the various forms of water that fall from the sky. SLEET, which is composed of frozen raindrops, is a five-letter word for one type of precipitation. RAINFALL is an eight-letter word for another type of precipitation, which is liquid water droplets that fall from clouds. HAIL is a four-letter word for yet another type of precipitation, which is made up of balls or lumps of ice that fall from the sky.