at two-hour intervals

USAGE SUMMARY

The phrase "at two-hour intervals" is correct and usable in written English.
You can use it to describe an action or event that occurs every two hours. Example: "The medication should be taken at two-hour intervals to ensure its effectiveness."

✓ Grammatically correct

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

17 human-written examples

The action is repeated at two-hour intervals throughout the afternoon and evening.

The New York Times

Designed by two European Jesuits at the behest of the Manchu Emperor Qianlong, the clock featured each animal of the Chinese zodiac spouting water at two-hour intervals.

The New York Times - Arts

Designed in the 18th century by two European Jesuits at the behest of the Manchu Emperor Qianlong, the fountain-clock featured each animal of the Chinese zodiac, spouting water at two-hour intervals.

The New York Times

The seven segments of "Perfect Lives" — which together obliquely and poetically describe a conceptual Corn Belt bank heist, its participants and its witnesses — take place at two-hour intervals during a single day.

The New York Times - Arts

The troposphere zenith delays were estimated for each station at two-hour intervals.

Earth, Planets and Space

Surveys on the exact same block segments were conducted at two-hour intervals between 6AM and 6PM.

Crime Science

Human-verified similar examples from authoritative sources

Similar Expressions

42 human-written examples

In CM, highest cell density was achieved at 96th hours.

AMB Express

Maximum production of PHB (11.32 g/L) occurred at 36th hour.

Bioresource Technology

This study compares effect of PLMA and IGA on voice at 24th hour after anesthesia.

Journal of Voice

Missing values at 4th hour (n = 3 values) for ICP and CCP were treated by imputation.

Annals of Intensive Care

Media was changed at every 24th hour, and cells were harvested at 96th hour.

Clinical Epigenetics

Expert writing Tips

Best practice

When describing medical dosages or experimental procedures, use "at two-hour intervals" to clearly specify the timing of interventions or measurements. This ensures clarity and avoids ambiguity.

Common error

Avoid mixing units of time within the same context. If you start with "at two-hour intervals", do not switch to minutes or other time measurements without clear justification. Maintain consistency for clarity.

Linguistic Context

The phrase "at two-hour intervals" functions as an adverbial phrase, modifying a verb to specify when or how frequently an action occurs. As Ludwig AI confirms, it is grammatically correct. Examples show its role in describing experimental procedures and repeating actions.

Expression frequency: Uncommon

Frequent in

Science

60%

News & Media

30%

Wiki

10%

Less common in

Formal & Business

0%

Encyclopedias

0%

Social Media

0%

Ludwig's WRAP-UP

In summary, "at two-hour intervals" serves as an adverbial phrase, pinpointing the timing of recurring events, particularly within scientific and medical domains. Ludwig AI confirms its grammatical correctness, and while it's not as ubiquitous as simpler alternatives like "every two hours", its formality lends precision to technical contexts. To maintain clarity, stick to consistent time measurements and leverage this phrase for scenarios demanding accuracy in temporal specifications.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

at intervals of two hours

Rephrases the sentence structure while maintaining the exact meaning.

every two hours

Replaces "at two-hour intervals" with a more straightforward and common expression of frequency.

bi-hourly

A single-word adjective indicating something happens every two hours.

at 120-minute intervals

Uses minutes instead of hours to describe the same duration.

every other hour

Specifies a frequency of occurrence, similar to the original phrase but implies skipping one hour in between.

every 120 minutes

Expresses the same time period using minutes.

with a two-hour frequency

Emphasizes the frequency of the events, maintaining a formal tone.

on a two-hour schedule

Highlights the regularity of the timing.

separated by two hours

Focuses on the time separation between events.

two hours apart

A simpler way to describe the spacing between events.

FAQs

How can I use "at two-hour intervals" in a sentence?

Use "at two-hour intervals" to describe actions or events that are repeated every two hours. For example, "The data was recorded at two-hour intervals throughout the experiment."

What are some alternatives to saying "at two-hour intervals"?

You can use alternatives like "every two hours" or "at intervals of two hours" to convey the same meaning.

Is there a difference between "at two-hour intervals" and "every two hours"?

While both phrases mean the same thing, "at two-hour intervals" might sound slightly more formal than "every two hours".

When should I use "at two-hour intervals" instead of "bi-hourly"?

"At two-hour intervals" is clearer in technical contexts. While "bi-hourly" means every two hours, it can be confused with twice an hour. "At two-hour intervals" avoids this ambiguity.