To vaporize something means to turn it into a gas or make it disappear quickly.
When we talk about vaporizing, often we're talking about food. Imagine you're eating an ice cream cone on a hot summer day - if it gets too warm outside, the ice cream can start to melt and eventually turn into a puddle of liquid that disappears. That's kind of like what happens when something is vaporized: it changes from a solid or liquid to a gas, so it can't be seen anymore. This word also gets used in science, particularly in chemistry or physics classes, where they might talk about things like turning water into steam by applying heat, which causes the water molecules to vaporize and rise up as gas.
To turn into vapor.
