Bishop abandons climb I’m for circulating in celluloid (9)
I believe the answer is:
microfilm
'celluloid' is the definition.
'bishop abandons climb i'm for circulating' is the wordplay.
'bishop' becomes 'b' (abbreviation used in chess).
'abandons' indicates named letters should be taken away.
'circulating' is an anagram indicator.
'climb'+'im'+'for'='climbimfor'
'climbimfor' with 'b' taken away is 'climimfor'.
'climimfor' anagrammed gives 'MICROFILM'.
'in' acts as a link.
(Other definitions for microfilm that I've seen before include "Equipment of spy" , "Miniaturised document file" , "Optical archiving medium" .)