| directional headlights | Kurvenlicht |
| directional isolator | Richtungsisolator |
| directional key | Pfeiltaste |
| directional microphone | Richtmikrofon |
| directional microphones | Richtmikrofone |
| directional mine | Richtmine |
| directional mines | Richtminen |
| directional motion | gerichtete Bewegung |
| directional movement | gerichtete Bewegung |
| directional nozzle | Richtstrahldüse |
| directional null | Nullstelle |
| directional overcurrent relay | abhängiges Überstromrelais |
| directional pattern | Strahlungscharakteristik |
| directional perception | Richtungswahrnehmung |
| directional power meter | Durchgangsleistungsmesser |
| directional power relay | Leistungsrichtungsrelais |
| directional pressure | einseitiger Druck |
| directional radiation | Richtstrahlung |
| directional radiator | Richtstrahler |
| directional radio | Richtfunk |
| directional radio beacon | Richtfunkbake |
| directional radio mast | Richtfunkmast |
| directional radio pattern | Richtcharakteristik |
| directional radio tower | Richtfunkmast |
| directional receiving pattern | Richtcharakteristik |
| directional reception | Richtempfang |
| directional recording instrument | Neigungsmesser |
| directional relay | Richtungsrelais |
| directional response pattern | Richtcharakteristik |
| directional right-of-way | Richtzeichen |
| directional selection | gerichtete Selektion |
| directional sensitivity | Richtungsempfindlichkeit |
| directional sign | Richtzeichen |
| directional signs | Verkehrslenkungstafeln |
| directional stability | Fahrstabilität |
| directional stability, straight ahead positioning | Geradeauslauf |
| directional traffic | Richtungsverkehr |
| directional transmission | Richtsendung |
| directional transmitter | Richtsendeanlage |
| directional valve | Wegeventil |
| directional valves | Wegeventile |
| directional-control valve | Wegeventil |
