every 2nd day

USAGE SUMMARY

"every 2nd day" is correct and usable in written English.
You can use it when referring to something that occurs on alternate days. For example, "I usually go for a run every 2nd day."

✓ Grammatically correct

Science

Wiki

Human-verified examples from authoritative sources

Exact Expressions

15 human-written examples

Regular aspirin use was defined as a minimum of 75 mg/day or 300 mg every 2nd day (9).

Diabetes Care

In a recent study, normal volunteers were subjected to intermittent 20-h fasts every 2nd day for 15 days while maintaining body weight.

Diabetes Care

Chondrocyte cultures were stimulated at a 2% shear strain amplitude at a frequency of 1 Hz for 400 cycles every 2nd day.

Journal of Orthopaedic Research

Further, the model was applied to predict RBC and HGB modulation after multiple doses of PHI-1 administered daily, every 2nd day or every 3rd day.

CPT: Pharmacometrics and Systems Pharmacology

Interestingly, low amplitudes of shear stimulation for short periods of time (6 min of stimulation applied every 2nd day) produced these changes.

Journal of Orthopaedic Research

The culture medium was removed and replaced 24 h post-slicing (100%%) and then every 2nd day (75%%).

Acta Neuropathologica

Human-verified similar examples from authoritative sources

Similar Expressions

45 human-written examples

CoRoT-7b orbits its star every 0.85 day at a distance of 2.6 million km (1.6 million miles).

Encyclopedia Britannica

Media was changed every 3 day for 2 weeks and mammospheres were counted.

Protein & Cell

Medium is changed every 2-3 day.

Biological Procedures Online

Trials were conducted, starting on day 20 after CIA induction, every 5 day until day 35.

Arthritis Research and Therapy

Chemotherapy treatment consisted of intravesical gemcitabine administered every 7±1 day for 6 consecutive weeks.

British Journal of Cancer

Expert writing Tips

Best practice

When describing schedules, use "every 2nd day" to clearly indicate that an action or event occurs on alternate days. This is particularly useful in scientific, medical, or routine-based contexts.

Common error

Avoid using "every 2nd day" when you actually mean something happens twice within the same day. "Every 2nd day" implies a gap of one day between occurrences, whereas "twice a day" indicates two instances within a single day.

Linguistic Context

The phrase "every 2nd day" functions as an adverbial modifier, specifying the frequency or interval at which an action or event occurs. As Ludwig confirms, it is grammatically correct and usable in written English.

Expression frequency: Uncommon

Frequent in

Science

80%

Wiki

10%

News & Media

5%

Less common in

Encyclopedias

2%

Formal & Business

2%

Reference

1%

Ludwig's WRAP-UP

In summary, the phrase "every 2nd day" is a grammatically correct adverbial phrase used to indicate that an event or action occurs on alternate days. While not as common as "every other day", it is still acceptable and understandable, as confirmed by Ludwig. It's most frequently encountered in scientific and medical contexts, but can also appear in general discussions about schedules. Ludwig's AI confirms that its usage is valid. When using this phrase, ensure it accurately conveys the intended meaning and isn't confused with frequencies like "twice a day".

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

every other day

This is the most direct synonym, indicating an action performed on alternate days.

alternate days

Highlights the alternating nature of the schedule.

on alternating days

Similar to 'alternate days', emphasizing the pattern.

every second day

A more verbose way of saying "every other day".

every two days

Specifies the interval between occurrences.

once every 48 hours

Defines the frequency in terms of hours.

a day on, a day off

Describes the schedule in terms of work/rest pattern.

bi-diurnal

A more formal term indicating twice a day or every two days, depending on the context.

intermittent daily schedule

Highlights the non-continuous nature of a daily schedule.

irregular daily schedule

Emphasizes the lack of a fixed daily pattern.

FAQs

How can I rephrase "every 2nd day"?

Alternatives to "every 2nd day" include "every other day", "alternate days", or "every two days".

Is it better to say "every 2nd day" or "every other day"?

Both "every 2nd day" and "every other day" are acceptable, but the latter is more common and widely understood.

What's the difference between "every day" and "every 2nd day"?

"Every day" means something happens each day, while "every 2nd day" means it happens only on alternate days, leaving a one-day gap in between.

In what situations is it appropriate to use "every 2nd day"?

Use "every 2nd day" when describing a schedule or routine where an action or event occurs on alternate days, such as taking medication or performing a task.