at three months

USAGE SUMMARY

The phrase "at three months" is correct and usable in written English.
It can be used to indicate a specific time frame or age, often in contexts related to development, milestones, or duration. Example: "The baby started to crawl at three months, showing remarkable early development."

✓ Grammatically correct

News & Media

Science

Academia

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

I was looking at three months, really.

Independent

Results appeared stable at three months following treatment.

European Journal of Pain

The mortality rate was 12.3% at three months.

Orthopaedics & Traumatology: Surgery & Research

"She was looking at three months of statements.

The Guardian - Money

At three months, she is demanding Tennyson at bedtime.

The New York Times - Arts

At three months he has no time to waste.

Independent

So, at three months of age they have this notion that words connect to objects.

Massachusetts Institute of Technology

Sexual maturity is rapidly attained, and least weasels often breed at three months of age.

Encyclopedia Britannica

At three months of age puppies can be inoculated against rabies.

Encyclopedia Britannica

At three months, the researchers infected some of the animals with the pathogen.

The Economist

At three months, 43 percent of the women in the W.H.O.

The New York Times

Expert writing Tips

Best practice

When describing developmental milestones or progress, use "at three months" to specify a particular age or duration, ensuring clarity and precision.

Common error

Avoid substituting "at three months" with prepositions that imply a duration longer than intended. For example, using "for three months" when you mean "at three months" can change the meaning.

Linguistic Context

The phrase "at three months" functions primarily as an adverbial phrase, modifying verbs or clauses by specifying when an action or state occurs. As Ludwig AI indicates, the phrase is grammatically correct and widely used. Examples in Ludwig showcase it describing milestones, research outcomes, and developmental stages.

Expression frequency: Very common

Frequent in

Science

33%

News & Media

32%

Academia

12%

Less common in

Encyclopedias

3%

Formal & Business

0%

Reference

0%

Ludwig's WRAP-UP

The phrase "at three months" is a common and grammatically sound temporal marker, as confirmed by Ludwig AI. It pinpoints a specific moment in time, often related to developmental stages, study outcomes, or project milestones. It is most frequently found in scientific and news contexts, maintaining a neutral register. When using "at three months", be sure to distinguish it from similar phrases like "in three months" or "after three months", which can alter the intended meaning. Use "at three months" to specify a precise point in time.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

after three months

Indicates a point in time following a three-month duration.

following three months

Similar to 'after three months', indicating the time that comes after.

within three months

Highlights the timeframe as a boundary for something to occur.

in three months

Specifies an event occurring within a three-month timeframe.

three months later

Indicates a point in time three months after a previous event.

during three months

Highlights events or conditions occurring throughout the three-month period.

three-month period

Refers to a duration of three months, emphasizing the span of time.

three months from now

Specifies a future time, three months from the present.

at the three-month mark

Highlights a specific milestone at the end of a three-month period.

by three months

Indicates a deadline or a target to be reached within three months.

FAQs

How is "at three months" used in a sentence?

The phrase "at three months" specifies a point in time, often referring to age or a milestone reached after a duration. For example, "The baby started smiling "at three months"."

What are some alternatives to "at three months"?

Depending on the context, you can use alternatives like "after three months", "in three months", or "when three months old".

Is it correct to say "in three months" instead of "at three months"?

While both phrases relate to a three-month timeframe, they have slightly different meanings. "At three months" pinpoints a specific moment, whereas "in three months" suggests a future point within that period. For example "The study concluded "at three months"" vs. "The study will conclude "in three months"".

What is the difference between "at three months" and "after three months"?

"At three months" signifies an event occurring precisely when three months have passed. "After three months" indicates anytime following that three-month mark.