Question

What is sublimation ?

Answer 1

Sublimation is the transition of a substance directly from the solid to the gas state, without passing through the liquid state. 

Answer 2

Answer:

Sublimation is the conversion between the solid and the gaseous phases of matter, with no intermediate liquid stage. ... The opposite of sublimation is "deposition", where water vapor changes directly into ice—such a snowflakes and frost.