once per day

USAGE SUMMARY

The phrase "once per day" is correct and usable in written English.
You can use it when you are referring to a specific action or event that occurs once within a 24 hour time period. For example: "I generally go for a 30-minute walk once per day to stay healthy."

✓ Grammatically correct

Science

News & Media

Wiki

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

The batches are swirled around once per day.

Environmental Sciences Europe

You can do this once per day.

WikiHow

Mice were treated with nano-TiO2 as indicated through gavage once per day for 60 days.

Nanoscale Research Letters

Cells were counted once per day for 5 days.

ACS Nano

Rat dams were dosed once per day on gestational days (GDs) 18 and 19.

Environmental Health Perspectives

Postoperative analgesia (Carprofen) and antibiotics (Baytril) were subcutaneously administered once per day for 10 days.

BioMed Research International

This oxidative low-intensity running was repeated once per day for consecutive 7 days.

Bioscience Reports

After surgery, each rat was given penicillin once per day for the first 3 days.

Arthritis Research and Therapy

Electrodes were changed at least once per day.

Annals of Intensive Care

Antifungal treatment should consist of either ABLC ≥5 mg/kg once per day or L-AmB ≥3 mg/kg once per day.

Clinical Microbiology and Infection

"Our median user checks the app once per day".

TechCrunch

Expert writing Tips

Best practice

When clarity is crucial, especially in medical or scientific contexts, use "once per day" to avoid ambiguity. For example, "Administer the medication "once per day" in the morning."

Common error

While "on a daily basis" is similar to "once per day", it can sound overly formal in everyday conversation. Opt for "once per day" or "daily" for a more natural tone.

Linguistic Context

The phrase "once per day" functions as an adverbial phrase, modifying a verb to indicate frequency. It specifies how often an action or event occurs within a 24-hour period. Ludwig confirms that it's a standard and acceptable construction in English.

Expression frequency: Very common

Frequent in

Science

79%

News & Media

10%

Wiki

11%

Less common in

Formal & Business

0%

Encyclopedias

0%

Social Media

0%

Ludwig's WRAP-UP

In summary, "once per day" is a grammatically correct and commonly used adverbial phrase that specifies the frequency of an action within a 24-hour period. Ludwig AI validates its acceptability in English writing. While alternatives such as "daily" or "every day" exist, "once per day" offers clarity and avoids potential ambiguity. Its neutral register makes it suitable for various contexts, ranging from scientific publications to everyday conversation. When accuracy is crucial, particularly in medical or instructional settings, "once per day" is the most effective choice.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

every day

This alternative provides a slightly more emphatic and straightforward way of expressing the same frequency.

each day

Similar to "every day", this alternative emphasizes the individual occurrence on each specific day.

daily

This is a single-word adjective or adverb that directly replaces the entire phrase with a more concise expression.

on a daily basis

This alternative is a more formal expression, suitable for professional or academic contexts.

one time per day

This alternative is more explicit but less common, emphasizing the single occurrence.

a day

This is a shorter, less specific way of saying the same thing, suitable for informal contexts.

once in 24 hours

This option specifies the timeframe more precisely, useful when emphasizing the 24-hour period.

per diem

This Latin phrase is sometimes used in professional contexts, particularly when referring to allowances or rates.

during the day

This phrase refers to something happening at an unspecified time during daylight hours.

in a day

Implies something completed within 24h

FAQs

How can I use "once per day" in a sentence?

You can use "once per day" to describe the frequency of an action. For example, "I take this medication "once per day"."

What's a simpler way to say "once per day"?

A simpler way to say "once per day" is "daily". For instance, "I have a "daily" walk."

Is it more formal to say "on a daily basis" instead of "once per day"?

Yes, "on a daily basis" is generally considered more formal than "once per day". Use it in professional or academic settings.

What's the difference between "every day" and "once per day"?

"Every day" simply means each day, whereas "once per day" specifies that something happens only one time during that day.