Range around US city, looking up, inducing fainting fit (7)
I believe the answer is:
syncope
'inducing fainting fit' is the definition.
I can't tell whether this definition defines the answer.
'range around us city looking up' is the wordplay.
'range' becomes 'scope' (synonyms).
'around' means one lot of letters goes inside another.
'us city' becomes 'NY' (short for New York).
'looking up' says the letters should be written in reverse (in a down clue, letters go up).
'ny' reversed gives 'yn'.
'scope' placed around 'yn' is 'SYNCOPE'.
Can you help me to learn more?
(Other definitions for syncope that I've seen before include "Temporary consciousness loss; spy once (anag.)" , "Omission of sounds or letters in middle of word" .)