Revolutionary provided with Guevara's microfilm (5)
I believe the answer is:
fiche
'microfilm' is the definition.
Both the definition and answer are singular nouns.
Maybe you can see a link between them that I can't see?
'revolutionary provided with guevara's' is the wordplay.
'revolutionary' says the letters should be written in reverse (letters revolve around).
'provided' becomes 'if' (eg 'provided it's sunny' means 'if it's sunny').
'with' says to put letters next to each other.
'guevara' becomes 'che' (revolutionary Che Guevara).
'if' reversed gives 'fi'.
'fi'+'che'='FICHE'
Can you help me to learn more?
(Other definitions for fiche that I've seen before include "Small film" , "Archived record" , "bit of film" , "data store" , "Card bearing data" .)