Clammy Daniel meets Kelvin (4)
I believe the answer is:
dank
'clammy' is the definition.
(synonyms)
'daniel meets kelvin' is the wordplay.
'daniel meets' becomes 'dan' (I can't explain this - if you can you should give a lot more credence to this answer).
'kelvin' becomes 'K' (abbreviation for the unit of temperature).
'dan'+'k'='DANK'
Can you help me to learn more?
(Other definitions for dank that I've seen before include "(Of atmosphere) wet and unpleasant" , "Chilly and clammy" , "Unpleasantly moist" , "Unpleasantly wet and cold" , "Damp, cold, musty" .)