DOUBLE-ACTING
Source: 567
Dou″ble–act′ing (?), a. Acting or operating in two directions or with both motions; producing a twofold result; as, a double-acting engine or pump.
Source: 567
Dou″ble–act′ing (?), a. Acting or operating in two directions or with both motions; producing a twofold result; as, a double-acting engine or pump.