weeks of age

USAGE SUMMARY

The phrase 'weeks of age' is correct and usable in written English.
It is often used to indicate the age of someone or something in weeks. For example: The baby is now six weeks of age.

✓ Grammatically correct

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

My youngest brother died at six weeks of age.

The Guardian - Lifestyle

Male Wistar rats, 7 weeks of age, were used.

International Journal of Implant Dentistry

Animals were studied at 26 to 28 weeks of age.

EJNMMI Research

All rabbits underwent an osteotomy at 12 weeks of age.

Strategies in Trauma and Limb Reconstruction

They were used between 6 and 8 weeks of age.

Clinical and Translational Medicine

Puberty was identified in two males at 6 weeks of age, two males at 7 weeks of age, and in all 6 males at 8 weeks of age.

Theriogenology

They were weaned at 6 weeks of age.

Livestock Production Science

At 12 weeks of age all animals underwent total pancreatectomy.

HPB

Blood and tissue samples were obtained at the beginning of molt (at 83 weeks of age), during molt (at 85 weeks of age) and postmolt (at 89 weeks of age).

General and Comparative Endocrinology

(Shanghai, CHINA) at 6 8 weeks of age.

Plosone

Mice of 8 16 weeks of age were used.

Plosone

Expert writing Tips

Best practice

When writing scientific or medical texts, use "weeks of age" to provide precise information about the age of subjects, especially in studies involving growth, development, or treatment responses.

Common error

Avoid mixing units of time when describing age. If you start with "weeks of age", maintain that unit throughout the description to prevent confusion. Don't switch to months or days without clear justification.

Linguistic Context

The phrase "weeks of age" functions primarily as a post-nominal modifier, specifying the age of a subject in terms of weeks. It is typically used after a noun to provide additional, clarifying information about the subject's age. According to Ludwig, the phrase is correct and usable in written English.

Expression frequency: Very common

Frequent in

Science

86%

News & Media

12%

Wiki

2%

Less common in

Formal & Business

0%

Encyclopedias

0%

Social Media

0%

Ludwig's WRAP-UP

The phrase "weeks of age" is a grammatically sound and frequently used term, especially within scientific and medical literature to specify precise ages. According to Ludwig, it is a correct and usable phrase in written English. It serves primarily to provide an accurate age reference, particularly useful when tracking short-term changes, which is reflected in its prevalent use within scientific contexts. When writing, it's crucial to maintain consistency in age units to avoid confusion. Alternatives such as "age in weeks" and "at X weeks old" can be used depending on the desired level of formality or precision.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

age in weeks

This alternative simplifies the phrase while retaining the core meaning of specifying age in terms of weeks.

at X weeks old

This alternative provides a common and direct way to express age, similar to the original phrase.

weekly age

This is a more concise way to specify the age, emphasizing the 'weekly' aspect.

chronological age in weeks

This alternative emphasizes the chronological aspect of age, clarifying it as time passed since birth

age measured in weeks

This alternative emphasizes the method of measurement rather than a direct age statement.

number of weeks since birth

This phrase specifies the calculation of age from the time of birth.

duration in weeks

Focuses on the length of time in weeks, suitable when the specific age is less important than the period.

period of weeks

Shifts the focus to a time span measured in weeks rather than a specific age.

for a period of X weeks

This is used to emphasize a time frame duration in weeks rather than the age.

gestational age in weeks

This is a specific use for the age of a fetus.

FAQs

How do I use "weeks of age" in a sentence?

You can use "weeks of age" to specify the age of an animal in scientific studies, for example, "Mice were studied at 6-8 "weeks of age"." It's also applicable to humans, such as "The infant was diagnosed with jaundice at two "weeks of age"."

What are some alternatives to "weeks of age"?

Alternatives include "age in weeks", "at X weeks old", or "number of weeks since birth", depending on the specific context and desired emphasis.

When is it appropriate to use "weeks of age" instead of "months of age"?

"Weeks of age" is more appropriate when precision is needed, especially in early development stages. For example, in infant studies or animal research, weekly measurements can reveal finer details than monthly intervals. Otherwise, consider "months of age" for general descriptions.

Is it correct to say "week old" instead of "weeks of age"?

While "week old" is commonly used, it typically functions as an adjective (e.g., "a two-week-old puppy"). "Weeks of age" provides more formal and precise information, often used in scientific or medical contexts. In many cases, rephrasing slightly (e.g., "two weeks old") can offer clarity.