The term 'liquid particle' can be described as a DROP, which is a four-letter word. A DROP is a small quantity of liquid, usually spherical in shape, that is formed when a liquid falls or is forced through a narrow opening. Drops are usually formed when a liquid is released from a container, such as a bottle or a tap. Drops can also be formed when a liquid is sprayed, such as when using a spray bottle. Drops can also be formed when a liquid evaporates, such as when a puddle of water dries up.