A compact fluorescent lamp ( CFL ) , also called compact fluorescent light , energy-saving light , and compact fluorescent tube , is a fluorescent lamp designed to replace an incandescent lamp ; some types fit into light fixtures formerly used for incandescent lamps .
A compact fluorescent lamp ( CFL ) , is a type of lamp ( light bulb ) designed to fit into the same space and usually also socket as an incandescent bulb , but with the advantages of a fluorescent lamp .