Dissolve
I believe the answer is:
melt
'dissolve' is the definition.
(I know that dissolve can be written as melt)
This is the entire clue.
(Other definitions for melt that I've seen before include "Liquefy with heat" , "Become liquid by heating" , "Thaw" , "Become liquefied" , "Reduce from a solid to a liquid state" .)