| open-loop current | Leerlaufstrom |
| open-loop gain | Leerlauf-Spannungsverstärkung |
| open-loop mode | offen prozeßgekoppelter Betrieb |
| open-loop operation | offen prozeßgekoppelter Betrieb |
| open-loop voltage gain | Leerlauf-Spannungsverstärkung |
| open-market policy | Offenmarktpolitik |
| open-market trading | Offenmarkthandel |
| Open-mid back rounded vowel | Gerundeter halboffener Hinterzungenvokal |
| Open-mid back unrounded vowel | Ungerundeter halboffener Hinterzungenvokal |
| Open-mid central rounded vowel | Gerundeter halboffener Zentralvokal |
| Open-mid central unrounded vowel | Ungerundeter halboffener Zentralvokal |
| Open-mid front rounded vowel | Gerundeter halboffener Vorderzungenvokal |
| Open-mid front unrounded vowel | Ungerundeter halboffener Vorderzungenvokal |
| open-minded | aufgeschlossen |
| open-minded environment | offenes Umfeld |
| open-mindedness | Aufgeschlossenheit |
| open-mouth bag | offener Sack |
| open-mouth sack | offener Sack |
| open-mouthed | betroffen |
| open-necked blouse | offene Bluse |
| open-necked shirt | offenes Hemd |
| open-ocean ecosystem | Ökosystem des offenen Ozeans |
| open-phase protection | Leiterbruchschutz |
| open-phase protection relay | Leiterbruchschutzrelais |
| open-phase relay | Phasenunterbrechungsrelais |
| open-pit mining | Tagebau |
| open-plan carriage | Durchgangswagen |
| open-plan coach | Durchgangswagen |
| open-plan office | Großraumbüro |
| open-pored | offenporig |
| open-shed jacquard machine | Offenfach-Jacquardmaschine |
| open-shed machine | Offenfach-Schaftmaschine |
| open-side planing machine | Einständerhobelmaschine |
| open-side plate planing machine | Einständer-Blechhobelmaschine |
| open-site | im Freien |
| open-source | quelloffen |
| open-source code software | quelltextoffene Software |
| Open-source license | Open-Source-Lizenz |
| open-source movement | Open-Source-Bewegung |
| Open-source software | Open Source |
| open-source-code software | quelloffene Software |
| open-steam vulcanizer | Vulkanisierkessel |
| open-timber roof | offener Dachstuhl |
| open-toe shoe | zehenfreier Schuh |
| open-toe shoes | zehenfreie Schuhe |
| open-top car | offener Güterwagen |
| open-top container | Oben-ohne-Container |
| open-top containers | Oben-ohne-Container |
| open-top glasses case | Stecketui |
| open-top glasses cases | Stecketuis |
| open-topped limousine | Cabriolimousine |
| open-type design | offene Bauweise |
| open-view kitchen | einsehbare Küche |
| open-water swimming | Freiwasserschwimmen |
| open-web truss | Pfostenträger |
| open-width dyeing machine | Breitfärbemaschine |
| open-width washing machine | Breitwaschmaschine |
| open-wire carrier equipment | Freileitungssystem |
| open-wire line | Freileitung |
| open-wire pole | Stange |
| open-wire trunk | Fernmelde-Freileitung |
| open-work | Durchbruch |
| open-work ... | durchbrochene |
| open-work embroidery | Durchbruch |
| open-work fabric | Filetgestrick |
| open-work weave | Durchbruchbindung |
| open-worked | durchbrochen |
| openable | aufklappbar |
| OpenAjax Alliance | OpenAjax Alliance |
| OpenArena | OpenArena |
| Openbill stork | Klaffschnabel |
| Openbox | Openbox |
| opencast | übertägig |
| opencast brown-coal mine | Braunkohlentagebau |
