Synonyms for Turbofan (same or very similar meaning)
WordNet sense 1 (an airplane propelled by a fanjet engine):
turbojet, fanjet, fan-jetWordNet sense 2 (a jet engine in which a fan driven by a turbine provides extra air to the burner and gives extra thrust):
fanjet engine, turbofan engine, turbojet engineFrom the ODE community, based on WordNetadd/edit