One component gets separated (5)
I believe the answer is:
apart
'separated' is the definition.
(synonyms)
'one component' is the wordplay.
'one' becomes 'a' (a thing is one thing).
'component' becomes 'part' (a component is a part of something).
'a'+'part'='APART'
'gets' acts as a link.
(Other definitions for apart that I've seen before include "aloof" , "Independently" , "Isolated" , "(Break) into pieces" , "Separated physically" .)