sublimation

https://doi.org/10.1351/goldbook.S06069
The direct transition of a solid to a vapour without passing through a liquid phase. Example: The transition of solid CO2 to CO2 vapour.
Source:
PAC, 1994, 66, 577. (Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)) on page 591 [Terms] [Paper]