Meaning of compander

com•pand•er

Pronunciation: (kum-pan'dur), [key]
— n. Electronics.
  1. (in a communications path) a combination of a compressor at one point and an expander at another, the compressor reducing the volume of a signal and the expander restoring it.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.