operability
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operability
The state in which a device, system, or organism is able to perform its intended tasks correctly and reliably.
Vor dem Start des Flugzeugs muss die Funktionsfähigkeit aller Systeme überprüft werden.
Before the aircraft takes off, the operability of all systems must be checked.
The word is built from three parts: 'Funktion' (function) + linking 's' + 'Fähigkeit' (ability). So it literally means 'ability to function.' Recognizing this structure helps you understand many long German nouns.
Nach dem Update war die Funktionsfähigkeit der Software eingeschränkt.
After the update, the operability of the software was limited.
This noun is often combined with certain verbs. Typical ones are: to 'überprüfen' (check), 'sicherstellen' (ensure), 'gewährleisten' (guarantee), 'wiederherstellen' (restore), or 'beeinträchtigen' (impair) the operability.
Ein Techniker soll die Funktionsfähigkeit der Heizung sicherstellen.
A technician is supposed to ensure the operability of the heating system.
'Funktionsfähigkeit' (operability) is a formal and technical word. It is often found in manuals, reports, and official documents, but rarely in everyday spoken language.
Der Bericht bestätigt die volle Funktionsfähigkeit der Anlage.
The report confirms the full operability of the facility.
performance capacity
Funktionsfähigkeit means that a device correctly and reliably performs its intended tasks. Leistungsfähigkeit additionally describes the level or capacity it achieves in doing so. If only correct operation is meant, „Funktionsfähigkeit“ is appropriate; for the performance it can achieve, „Leistungsfähigkeit“ is the better choice.
Nach dem Austausch des Kabels war die Funktionsfähigkeit des Druckers wiederhergestellt.
After the cable was replaced, the printer's operability was restored.
Die Leistungsfähigkeit des neuen Druckers reicht für dreimal so viele Seiten pro Tag aus.
The new printer's performance capacity is sufficient for three times as many pages per day.
