Definitions

1. verb

to reverse the process of melting, or to become unmelted

“The ice cream did not unmelt even in the warm summer sun.”

2. noun

something that has been reversed from its melted state

“The unmelt was used to repair the damaged roads after the heatwave.”

3. adjective

not yet melted, or still solid

“The unmelt ice cubes were used to cool the drink.”