/ ˈɒpərəbl; NAmE ˈɑːp-/ adjective
1.
that functions; that can be used :
When will the single currency be operable?
2.
( of a medical condition ) that can be treated by an operation
OPP inoperable
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WORD ORIGIN
mid 17th cent.: from late Latin operabilis , from Latin operari expend labour on, from opus , oper- work.