at two-month intervals

USAGE SUMMARY

The phrase "at two-month intervals" is correct and usable in written English. You can use it to describe events or actions that occur every two months. For example, "The meetings will be held at two-month intervals." Alternative expressions include "every two months" and "bi-monthly."

✓ Grammatically correct

Science

Academia

News & Media

Human-verified examples from authoritative sources

Exact Expressions

13 human-written examples

Analysis 3 examines the reliability of the composite measure of physical disorder at different spatiotemporal windows, finding that census tracts can be measured at two-month intervals and census block groups at six-month intervals.

Harvard University

The label would retain exclusive rights to the music for two years, offering it only on elegantly packaged vinyl and only to subscribers, who would pay $400 for a year's worth of recordings: six in all, sent at two-month intervals.

The New York Times - Arts

Sample collection started at harvest and continued for six months at two-month intervals from 21 selected actors along the supply chain.

Journal of Stored Products Research

Cinacalcet dose changes were performed by the treating nephrologists at two-month intervals between baseline and six months and at their discretion between six and nine months.

BioMed Research International

Soil samples were collected at two-month intervals and water was added once per week to half of the plots.

Acta Oecologica

Since the phenotyping system could only handle 192 plants at once and since 3 × 2 replicated controls (the indica variety IR64 and the japonica variety Azucena) were included in each tank, the replications were grown at two-month intervals.

Rice

Human-verified similar examples from authoritative sources

Similar Expressions

47 human-written examples

DESIGN: This secondary analysis evaluated the systolic blood pressure of patients who received usual hypertension management across 24 months at six-month intervals.

Duke University

Surveys were initially conducted at six-month intervals.

Yale University

Conducting reviews at six-month intervals should be viewed as a minimum requirement since workers with disabilities are entitled to commensurate wages for all hours worked.

Cornell University

Graduates of the program return at three-month intervals for relapse prevention until they need only a once-a-year evaluation.

The New York Times

Furthermore, under the terms of a 2005 agreement between the largest lenders and the New York attorney general's office, borrowers must be given a table showing what they will owe at six-month intervals.

The New York Times

Expert writing Tips

Best practice

Use this specific construction in clinical, scientific or technical reports to ensure there is no ambiguity regarding the schedule of data collection or treatment.

Common error

A frequent mistake is writing "at two month intervals" without the hyphen. In English grammar, when a number and a noun combine to modify another noun, they must be hyphenated to indicate they are a single unit of meaning.

Linguistic Context

The phrase "at two-month intervals" functions as a temporal prepositional phrase that acts as an adverbial of frequency. It specifies the exact timing between recurring events. According to Ludwig, the structure consists of the preposition "at", followed by a compound modifier ("two-month") and the head noun "intervals".

Expression frequency: Common

Frequent in

Science

55%

Academia

30%

News & Media

10%

Less common in

Formal & Business

3%

Encyclopedias

1%

Wiki

1%

Ludwig's WRAP-UP

In conclusion, "at two-month intervals" is a highly professional and grammatically precise phrase used to describe events occurring every sixty days. Ludwig AI indicates that it is particularly favored in Scientific and Academic contexts for its lack of ambiguity compared to terms like "bi-monthly". The presence of the hyphen in "two-month" is a critical stylistic requirement for formal writing. Whether you are describing a clinical trial or a magazine subscription, this phrase ensures your schedule is communicated with absolute clarity and authority.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

every two months

Provides a more direct and slightly less formal alternative suitable for general communication.

every other month

A common idiomatic expression used in conversational or informal settings.

bi-monthly

A more concise term, though it can occasionally be ambiguous as it may also mean twice a month.

recurring bimonthly

Reinforces the regularity of the action using a single adverbial form.

at eight-week intervals

Increases specificity by using weeks rather than months as the unit of measurement.

on a two-month cycle

Emphasizes the repetitive or systemic nature of the occurrence.

every sixty days

Offers the highest level of precision, often used in strict administrative or technical contexts.

with two-month gaps

Focuses on the duration of the period between events rather than the schedule itself.

twice a quarter

Framed within a financial or seasonal timeframe, implying a similar frequency.

staggered by two months

Used when referring to overlapping events that start at different times.

FAQs

Is "at two-month intervals" grammatically correct?

Yes, it is perfectly correct. As noted by Ludwig, the use of the hyphen in "two-month" is essential because it acts as a compound adjective modifying the word "intervals".

Should I use "at two-month intervals" or "bi-monthly"?

While "bi-monthly" is shorter, it can be confusing because it sometimes means twice a month. Using "at two-month intervals" is safer in formal or scientific writing to avoid any misunderstanding.

What is a simpler way to say "at two-month intervals"?

You can use the phrase "every two months" for a clearer and more accessible tone in everyday writing.

Can I say "at 2-month intervals" using digits?

In scientific and technical writing, using digits as in "at 2-month intervals" is often preferred for clarity, though formal prose usually favors spelling out the number.