After start of dissent, see clique split and melt away (10)
I believe the answer is:
deliquesce
'melt away' is the definition.
'after start of dissent see clique split' is the wordplay.
'after' says to put letters next to each other.
'start of' says to take the initial letters.
'split' indicates an anagram.
The first letter of 'dissent' is 'd'.
'see'+'clique'='seeclique'
'seeclique' anagrammed gives 'eliquesce'.
'd'+'eliquesce' is 'DELIQUESCE'.
'and' is the link.
(Other definitions for deliquesce that I've seen before include "(Of a solid) liquefy by absorbing air's moisture" , "What's to dissolve gradually" , "Liquefy by absorbing water from the air" .)