1. film of water droplets: tiny drops of water that form on a cold surface such as a window when warmer air comes into contact with it
2. making something shorter: the state of being compressed or made briefer, or the act or result of summarizing or compressing something
3. physics conversion of gas to liquid: the process by which a vapor loses heat and changes into a liquid
4. chemistry formation of denser molecules: the bonding of molecules of a substance to form a larger denser molecule, usually with the release of simpler substances such as water