1. (

• interchangeable

) (mathematics, logic) such that the arguments or roles can be interchanged; "the arguments of the symmetric relation, `is a sister of,' are interchangeable" ;

2. (

• exchangeable ,
• interchangeable ,
• similar ,
• standardized ,
• standardised

) capable of replacing or changing places with something else; permitting mutual substitution without loss of function or suitability; "interchangeable electric outlets"; "interchangeable parts" ;