1.(mathematics, logic) such that the arguments or roles can be interchanged - the arguments of the symmetric relation, 'is a sister of,' are interchangeable • Similar to: symmetrical, symmetric • Derivationally related forms: interchangeableness • Topics: logic 2. capable of replacing or changing places with something else; permitting mutual substitution without loss of function or suitability - interchangeable electric outlets" "interchangeable parts • Syn: exchangeable, similar, standardized, standardised • Similar to: replaceable • Derivationally related forms: similarity (for: similar), interchangeableness, interchangeability
