every third week

USAGE SUMMARY

The phrase "every third week" is correct and usable in written English.
You can use it to indicate a recurring event or activity that takes place once every three weeks. Example: "We will have our team meetings every third week to discuss project updates and progress."

✓ Grammatically correct

News & Media

Science

Wiki

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

After Freddy married, his wife came, too, of course, so I got to enjoy my grape Kool-Aid only every third week.

The New Yorker

Each owner could use the house every third week in the off-season free, but during peak times, they would have to rent it — but at a 20percentt discount.

The New York Times

Its national meetings, which seem to occur every third week, are usually marked by a contretemps, inevitably over something symbolic and sophomoric, often involving the roster of speakers invited — moderate Democrats, like many former social outcasts, have an unhealthy obsession with who should be in and who should be out.

The New Yorker

He is responsible for the weather on the station, TV Norge, every third week, rotating with a young, nonblond woman and with Christopher Dons, an old friend who is also his partner in a business that sells equipment for kiteboarding, in which snowboarders are tethered to enormous kites and propelled by the wind.

The New York Times

Its national meetings, which seem to occur every third week, are usually marked by a contretemps, inevitably over something symbolic and sophomoric, often involving the roster of speakers invited moderate Democrats, like many former social outcasts, have an unhealthy obsession with who should be in and who should be out.

The New Yorker

"I'm happy because in the reserves you maybe have a game every third week and it's not the same really".

BBC

Patients were asked to complete the PRO-CTCAE questionnaire at each treatment visit every third week in the clinic prior to consultation with the oncologist.

Journal of Patient-Reported Outcomes

In the 1960s, Mrs. Plissey produced her own television show "The Aroostook Homemaker" which aired every third week on Presque Isle television station WAGM-TV.

Wikipedia

The House will be in session only 94 days in all of next year (including many days where votes are postponed until 6PM) and will continue its habit of going into recess virtually every third week.

Huffington Post

Body weights were measured every third week during the study.

Plosone

Thus, plants were refreshed in the growth chambers every third week, just before complete wilting.

Plosone

Expert writing Tips

Best practice

When scheduling events or treatments, clearly specify the start date along with using the phrase "every third week" to avoid ambiguity. For example, "Treatment will begin on January 1, 2025, and continue every third week thereafter."

Common error

Avoid assuming "every third week" means three times a week. It signifies once every three weeks, not a high-frequency occurrence.

Linguistic Context

The phrase "every third week" functions as an adverbial phrase, specifying the frequency or interval at which an event occurs. Ludwig AI indicates its correctness and usability. Examples from Ludwig illustrate its use in various contexts to denote recurrence.

Expression frequency: Very common

Frequent in

Science

48%

News & Media

38%

Wiki

3%

Less common in

Formal & Business

1%

Reference

0%

Encyclopedias

0%

Ludwig's WRAP-UP

The phrase "every third week" is a grammatically sound and frequently used adverbial phrase that specifies an event's recurrence at three-week intervals. As Ludwig AI confirms, it's suitable for various contexts, particularly in science, news, and media, where schedules and intervals need precise communication. While alternatives like "every three weeks" or "at three-week intervals" exist, they offer slightly different nuances. Remembering that "every third week" describes something happening once in three weeks, and not three times per week, is crucial for avoiding misinterpretations.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

every three weeks

Omits the word "third", simplifying the phrase while retaining the same meaning.

once every three weeks

Adds the word "once" for emphasis on the single occurrence within the three-week period.

each third week

Substitutes "every" with "each" to describe recurrency.

at three-week intervals

Uses a noun phrase to indicate the spacing between occurrences.

triweekly

Replaces the phrase with a single word indicating "every three weeks", although this word is less commonly used.

every 21 days

Replaces weeks with days for a more precise measurement of the interval.

on a three-weekly basis

Uses a more formal phrasing to indicate the recurring schedule.

following a three-week cycle

Emphasizes the cyclical nature of the recurring event.

every third monday

Specifies the day of the week when the event occurs.

every 21st day

Uses ordinal number to show exact recurrency.

FAQs

How can I rephrase "every third week" to sound more formal?

For a more formal tone, consider using phrases like "at three-week intervals" or "on "a three-weekly basis"" to maintain clarity and professionalism.

What does "every third week" actually mean?

"Every third week" indicates that an event or action occurs once every three weeks. It doesn't mean three times a week, but rather once with a two-week gap in between.

Is there a single word to replace the phrase "every third week"?

The word "triweekly" technically means "every three weeks", but it's not very common and can be confused with "three times a week". It's generally safer to stick with the phrase "every third week" for clarity.

How do I use "every third week" in a sentence?

You can use "every third week" to describe a recurring event or schedule. For example, "The team meets every third week to discuss progress" or "Patients receive treatment every third week for four cycles."