every 2 hours

USAGE SUMMARY

The phrase "every 2 hours" is correct and usable in written English.
It can be used to indicate a recurring event or action that takes place at two-hour intervals. Example: "The medication should be taken every 2 hours to ensure its effectiveness."

✓ Grammatically correct

Science

Academia

News & Media

Wiki

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Email list members are updated daily every 2 hours.

Yale University

Existing guidelines recommend oral misoprostol solution 25 μg every 2 hours.

American Journal of Obstetrics and Gynecology

Sixty patients (30 pre, 30 post) recorded numerical assessments of their pain every 2 hours in a pain diary.

Pain Management Nursing

Images were taken every 2 hours with covering a z-interval of 80 μm.

Nature

Images were taken for 60 hours every 2 hours covering a z-interval of 40 μm.

Nature

She stayed on a sofa so she could breast-feed the boy every 2 hours or so.

The New York Times

Reapply at least once every 2 hours, even if your child doesn't sweat or go in the water.

Harvard University

DIRECTIONS: 1/2 tsp. in glass of water every 2 hours up to maximum dosage or as directed by physician.

Harvard University

Topical corticosteroids were tapered to every 2 hours OU.

Journal of Ophthalmic Inflammation and Infection

He decided to take his temperature every 2 hours and monitor himself for additional symptoms.

Science Magazine

Then, the participants were kept awake for 26 hours and given the test every 2 hours.

Science Magazine

Expert writing Tips

Best practice

When describing medical dosages or monitoring frequencies, use "every 2 hours" to clearly communicate the necessary intervals for treatment or observation.

Common error

Avoid vague language like "every few hours" when precision is needed. Stick to the specified interval of "every 2 hours" to avoid ambiguity, especially in instructions or protocols.

Linguistic Context

The phrase "every 2 hours" functions primarily as an adverbial phrase of frequency, modifying a verb to specify how often an action occurs. As noted by Ludwig AI, it indicates a recurring event at consistent two-hour intervals. Examples from Ludwig show it being used to modify actions like 'reapply', 'monitor', or 'measure'.

Expression frequency: Very common

Frequent in

Science

54%

Academia

15%

News & Media

13%

Less common in

Wiki

17%

Formal & Business

0%

Encyclopedias

0%

Ludwig's WRAP-UP

In summary, the phrase "every 2 hours" functions as an adverbial phrase specifying the frequency of an action. Ludwig AI validates its grammatical correctness and usability, highlighting its widespread use across diverse contexts. Predominantly found in scientific and academic writing, as shown by Ludwig's examples, it serves to provide precise temporal instructions or descriptions. While alternatives exist, such as "bi-hourly" or "at two-hour intervals", "every 2 hours" provides a clear and concise way to communicate recurring actions at regular two-hour intervals.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

each two hours

Adds emphasis on each individual instance of the two-hour period.

at two-hour intervals

More formal and emphasizes the structured, periodic nature of the time frame.

each and every two hours

Add emphasis on each individual instance of the two-hour period, this alternative is verbose.

every other hour

Implies a slightly different perspective, emphasizing the alternating nature of the interval.

at intervals of two hours

A more verbose and formal way of expressing the same time interval.

bi-hourly

Replaces the numerical description with a single word indicating occurrence twice per hour or every two hours; less precise.

on a two-hour schedule

Highlights the regularity of the time frame as part of a planned routine.

two hours apart

Focuses on the separation in time between events rather than the frequency.

at a frequency of two hours

Scientific and high-level description of an event happening "every 2 hours".

twice every four hours

More complex way to express that one thing happened "every 2 hours".

FAQs

How do I use "every 2 hours" in a sentence?

Use "every 2 hours" to indicate that something should be done or happens once within a period of two hours. For example, "Reapply sunscreen "every 2 hours" for optimal protection."

What are some alternatives to saying "every 2 hours"?

Alternatives include "at two-hour intervals", "bi-hourly", or "every other hour", depending on the specific context and desired level of formality.

Is it correct to say "every 2 hours" or "every two hours"?

Both "every 2 hours" and "every two hours" are grammatically correct and interchangeable. The numerical form is often used for brevity, especially in technical or instructional contexts.

When should I use "every 2 hours" instead of a more general term like "frequently"?

Use "every 2 hours" when you need to specify a precise interval for an action or event. For less critical or time-sensitive situations, "frequently" or "regularly" may suffice.