Uproar over medicines dropping temperature? Temperature well dropped in this (8)
I believe the answer is:
cryonics
'medicines dropping temperature? temperature well dropped in this' is the definition.
The definition suggests a singular noun which matches the answer.
'uproar over' is the wordplay.
I cannot really see how this works, but
'over' could be 'on' (physically on top of) and 'on' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for cryonics that I've seen is " that freezes people".)