centrex

cen trex |ˈsenˌtreks ˈsɛntrɛks |( trademark Centrex ) ▶noun a telephone service in which a group of phone lines can be joined by part of the local exchange acting as a private exchange. ORIGIN late 20th cent.: blend of central and exchange .

centrex

cen |trex |ˈsɛntrɛks | ▶noun [ mass noun ] a telephone service in which a group of phone lines can be joined by part of the local exchange acting as a private exchange. ORIGIN 1990s: blend of central and exchange .