A certain degree of electrifying pressure (4)
I believe the answer is:
volt
This might be a double definition.
'a certain degree' is the first definition.
The definition and answer can be both quantities as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'electrifying pressure' is the second definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for volt that I've seen before include "Electrical SI unit named after a pioneering Italian physicist, d. 1827" , "A measure of electricity" , "Unit of electric force" , "Electricity unit" , "Unit of electric potential difference" .)