Also, ex⋅pan⋅dor.Electronics. a transducer that produces an output with a range of voltages greater than that of the input signal. Compare compressor(def. 5).
Main Entry: ex·pand·er Pronunciation: ik-'span-d&r Function: noun : any of several colloidal substances (as dextran) of high molecularweight used as a blood or plasma substitute for increasing the blood volume called also extender