ill-defined boundary

USAGE SUMMARY

The phrase "ill-defined boundary" is correct and usable in written English.
It can be used to describe a boundary that is not clearly established or is vague in nature, often in contexts such as law, science, or philosophy. Example: "The concept of personal space can vary greatly between cultures, leading to an ill-defined boundary that can cause misunderstandings."

✓ Grammatically correct

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

4 human-written examples

The puppy's arrival acted as a catalyst to sort out an ill-defined boundary.

The Guardian - Lifestyle

The infiltrative nature of malignant tumors generate an irregular pattern of impedance discontinuities, which results irregular, spiculated or ill-defined boundary in breast ultrasound images.

Human-centric Computing and Information Sciences

As illustrated in Fig.  5, a positive immunofluorescent signal corresponding to MMP-2 was found at the ill-defined boundary between clusters of normal transplanted hepatocytes and the surrounding host liver (Fig.  5a c), in agreement with previous findings (Koenig et al. 2005).

Histochemistry and Cell Biology

In the dysplastic cortex, MAP2 highlighted the ill-defined boundary between the gray and white matter with prominent, horizontally orientated neurons in the immediate subcortical region (Fig. 2O) in contrast to a sharper gray-white boundary in the adjacent normal cortex (Fig. 2P).

Epilepsia

Human-verified similar examples from authoritative sources

Similar Expressions

56 human-written examples

However, these ill-defined boundaries for headache features may confuse CDSS and thus inconsistent output may arise.

The Journal of Headache and Pain

To use the hackneyed ape-to-human transition as an example, the definition of both "ape" and "human" are arbitrary ones with ill-defined boundaries.

Evolution: Education and Outreach

In the interpretation of medical images, from any imaging modality, segmentation is a difficult task because of issues such as spatial resolution, poor contrast, ill-defined boundaries, noise, or acquisition artefacts [12, 13].

Advanced Structural and Chemical Imaging

Through the years, tensions over the two nations' ill-defined boundaries have festered, with frequent reports of Chinese incursions and a recently-released Chinese map including the Indian state of Arunachal Pradesh as Chinese territory.

Huffington Post

In cases of RPE detachment, a sharp bordered, oval structure was observed, which showed slightly increased NIR towards its relatively ill-defined boundaries.

Graefe's Archive for Clinical and Experimental Ophthalmology

However, enamel defects are often of irregular shape and frequently have ill-defined boundaries presenting difficulties in accurate quantification by manual techniques.

Archives of Oral Biology

Although many other results on mass segmentation have been published, automatic segmentation of mass is still considered difficult because of the ill-defined boundaries and overlapping with fibro-glandular tissue of many masses [ 11].

BMC Systems Biology

Expert writing Tips

Best practice

When using "ill-defined boundary", ensure the context clearly indicates what is causing the lack of definition. Providing specific reasons or examples can enhance clarity and prevent misinterpretations.

Common error

While "ill-defined boundary" is generally acceptable, be mindful of the formality of your writing. In highly formal or technical contexts, consider using alternatives like "ambiguous limit" or "unclear delineation" to maintain a professional tone.

Linguistic Context

The phrase "ill-defined boundary" primarily functions as a descriptive term. It modifies a noun (boundary) to indicate a lack of clarity or precision, similar to what Ludwig AI explains, highlighting a state where the limits are not clearly established.

Expression frequency: Uncommon

Frequent in

Science

50%

News & Media

37%

Wiki

13%

Less common in

Formal & Business

0%

Encyclopedias

0%

Reference

0%

Ludwig's WRAP-UP

In summary, "ill-defined boundary" is a grammatically correct and usable phrase for describing limits lacking clarity. Ludwig AI confirms its validity, and while it's not overly frequent, it finds use across scientific and news contexts. When writing, ensure the context clarifies the reasons for the lack of definition, and consider formality when choosing alternatives like "vague border". Keep in mind that while the phrase is fine and valid the term theft when used as a legal claim is ill-defined and needs further explanation.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

vague border

Replaces "ill-defined" with "vague", emphasizing the lack of clarity.

unclear delineation

Substitutes both words, highlighting the absence of a distinct separation.

fuzzy demarcation

Employs "fuzzy" and "demarcation" to suggest a blurred or indistinct separation.

indistinct border

Replaces "ill-defined" with "indistinct", focusing on the lack of clarity in the boundary.

ambiguous limit

Uses "ambiguous" and "limit" to indicate uncertainty and a lack of precise definition.

imprecise border

Replaces "ill-defined" with "imprecise", emphasizing the lack of exactness.

poorly defined boundary

Replaces "ill-" with "poorly", changing the tone slightly but maintaining the core meaning.

nebulous frontier

Uses "nebulous" and "frontier" to create a more metaphorical and less precise image.

tenuous border

Suggests the boundary is weak and easily crossed.

unfixed boundary

Emphasizes the boundary is not permanently established.

FAQs

How can I use "ill-defined boundary" in a sentence?

You can use "ill-defined boundary" to describe situations where a border or limit is not clearly established or is vague. For example: "The concept of personal space often has an ill-defined boundary, varying significantly across cultures."

What are some alternatives to "ill-defined boundary"?

Alternatives include "vague border", "unclear delineation", or "fuzzy demarcation" depending on the specific nuance you want to convey.

Is "ill-defined boundary" formal or informal?

The phrase "ill-defined boundary" is suitable for both formal and informal contexts, but it leans towards neutral. For more formal writing, consider using phrases like "ambiguous limit".

What does "ill-defined boundary" mean?

"Ill-defined boundary" refers to a limit or border that is not clearly established, is vague, or lacks precise definition. It indicates a lack of clarity regarding where something starts and ends.