If something is sublimable, it means it can change from a solid to a gas without becoming a liquid first.
Sublimable things are special because they can change in a way that most things can't.
Examples:
Dry ice is sublimable.
Water is not sublimable.
Sublimable things are very interesting.
I wish I could be sublimable and disappear when I want to.
In cartoons, some characters have sublimable powers.
The sublimable powder turned into a gas right before our eyes.