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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
is operational until
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is operational until" is correct and usable in written English. You can use it to indicate the duration of time that something will remain functional or in service. Example: "The system is operational until the end of the month." Alternative expressions include "is active until," "remains in effect until," and "is in operation until."
✓ Grammatically correct
Science
Wiki
Encyclopedias
News & Media
Alternative expressions(20)
is valid until
persists until
is available until
lasts until
will remain in effect until
has been obscured until
good through
has been prolonged until
applied until
this certificate is valid until
effective until
expires on
has been forbidden until
has been closed until
has been used until
is appropriate until
is open until
has been delayed until
is in force until
has been bailed until
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
1 human-written examples
The column is operational until the metal ions in the effluent start appearing and for practical purposes the working life of the column is over called breakthrough point.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
Passenger services operated on the line until 1986 and freight services were operational until 1995.
Wiki
The canal was operational until 1924.
Encyclopedias
The airport is not expected to be operational until 2020.
News & Media
The large majority of mines were operational until the 1960s.
Encyclopedias
The court, based in The Hague, is not likely to be operational until early next year.
News & Media
The DD-21, even if there were no delays, would not be operational until 2010.
News & Media
The £16bn project is not expected to be operational until 2030s.
News & Media
The East Timor defense force is not expected to be operational until January 2004.
News & Media
Today's passengers must not pay for capacity that will not be operational until the mid-2020s".
News & Media
The elevator won't be operational until tomorrow, so we hope you'll be able to go back then".
News & Media
Expert writing Tips
Best practice
When using "is operational until", clearly define the subject and the end date or event. For example, "The support line is operational until the end of the business day."
Common error
Avoid using "is operational until" when you mean "is planned to be operational by". The first refers to an existing service, while the second refers to a future state.
Source & Trust
86%
Authority and reliability
4.2/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is operational until" functions as a predicate adjective describing the state of something being functional up to a certain point in time. As Ludwig AI shows, this indicates a defined period of service or functionality. It sets temporal boundaries.
Frequent in
News & Media
33%
Science
33%
Encyclopedias
11%
Less common in
Wiki
11%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "is operational until" is a grammatically sound and generally accepted way to indicate the duration of service or functionality. Although Ludwig AI's analysis classifies it as "rare", it's used across a variety of contexts, from news and media to science and encyclopedia entries. As Ludwig's examples show, the phrase is commonly used when mentioning the lifespan of services, systems, or equipment. When employing this phrase, it's crucial to clearly state what is operational and the exact end date to avoid ambiguity. Despite its infrequent usage, "is operational until" provides a clear and concise way to convey temporal boundaries.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
remains functional until
Emphasizes continued functionality up to a specific time.
stays in service until
Highlights the duration of active service.
continues to run until
Focuses on the action of running or operating up to a deadline.
is active until
Highlights the state of being active for a defined period.
functions until
Simple and direct synonym focusing on the ability to function.
is valid until
Implies legitimacy and usability until a specific date.
holds until
Suggests a period during which something remains in effect.
persists until
Emphasizes that something lasts or endures until a certain point.
is available until
Highlights the availability of something for a limited time.
lasts until
Simple and direct way of saying that something will continue for the duration.
FAQs
How can I use "is operational until" in a sentence?
You can use "is operational until" to specify the period during which a system, service, or piece of equipment will be functional. For example, "The server "remains functional until" the scheduled maintenance window".
What can I say instead of "is operational until"?
Alternatives include phrases like ""remains functional until"", "stays in service until", or "continues to run until", depending on the specific context.
What is the difference between "is operational until" and "will be operational by"?
"Is operational until" refers to something currently working that will stop at a certain point. "Will be operational by" refers to something not yet working, but planned to be in the future. Using the phrases interchangeably could lead to confusion.
Is it correct to say "was operational until"?
Yes, "was operational until" is correct. It indicates that something was functional in the past, up to a specific point. For example, "The old factory "stayed in service until" 1995".
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
86%
Authority and reliability
4.2/5
Expert rating
Real-world application tested