What does inoperability mean?
Inoperability is the condition of being unable to operate, function, or be treated. The word is especially associated with machinery, technical systems, facilities, and services that have been disabled by a fault, breakdown, or incompatibility. It may also describe a medical condition in which surgery is considered too risky or otherwise unsuitable. In ordinary use, inoperability has a more technical and impersonal tone than terms such as “brokenness” or “failure,” emphasizing the inability to function rather than merely the presence of a problem. The word is useful when discussing systems whose purpose depends on continuous operation, such as transport networks, power plants, communication systems, or medical equipment. It is usually a countable noun when referring to a particular failure, but it can also be used in general or abstract contexts, as in discussing the inoperability of a service during maintenance.
nounThe condition of being unable to operate or function, especially because of a mechanical, technical, or operational fault. In medicine, it refers to a patient or condition that cannot be safely treated by surgery.
- The inability of a machine, system, facility, or service to operate or function.
- The condition of a patient or medical situation being unsuitable for surgery or another operation.
- The state of something being unable to function effectively, often because of a technical or organizational problem.
"The temporary inoperability of the equipment delayed the experiment."
"The hospital reported the inoperability of one of its imaging units."
"Engineers worked overnight to determine the cause of the network's inoperability."
The plural is used when referring to separate instances of inability to operate or function, though the singular form is much more common in general and technical writing.
"The report documented several temporary inoperabilities across the plant's equipment."
A machine can be intact and visible yet still be inoperable—sometimes the smallest failure makes the whole system useless.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does inoperability come from?
The word inoperability is formed from the prefix in-, meaning “not,” and operable, which comes from Latin operari, “to work” or “to operate.” The family ultimately derives from Latin opus, meaning “work,” and includes forms such as operate, operation, operator, and cooperate. Inoperability developed in the modern period as a technical term for the state of being unable to operate, with its medical use emphasizing a condition in which an operation cannot safely be performed.
Related word forms
How inoperability is actually used
Inoperability is formal and comparatively uncommon in everyday speech. In medicine, it usually means that surgery is not considered safe or practicable, although it can also be used in a broader sense for systems or facilities that cannot function.
Easily confused with inoperability
Inoperative means not functioning or not in effect, whereas inoperable means unable to be operated or treated, with the latter especially used in medical contexts.
Inoperability is the noun naming the condition of being unable to operate or be treated, while inoperable is the adjective describing the person, device, or condition.