Article in operating room? This is different (5)
I believe the answer is:
other
'is different' is the definition.
(similar in meaning)
'article in operating room?' is the wordplay.
'article' becomes 'the' (the definite article).
'in' indicates putting letters inside.
'operating room?' becomes 'or' (this could be a standard abbreviation of which I'm unaware).
'the' inserted within 'or' is 'OTHER'.
'this' is the link.
Can you help me to learn more?
(Other definitions for other that I've seen before include "Different, not the same one or this one" , "Alternative - unrelated" , "Different (from those mentioned)" , "Second" , "Remaining" .)