Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
Marker line
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "Marker line" is correct and usable in written English.
It can be used in contexts related to drawing, mapping, or indicating a specific point or boundary. Example: "The surveyor placed a marker line to indicate the property boundary."
✓ Grammatically correct
Science
News & Media
Wiki
Alternative expressions(4)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
43 human-written examples
Thirty-two slits on a rotating disk fixed to the spinning axis are used to monitor the spinning angle with a photo-interrupter, and one of the slits is marked as the zero angle, which is used to orient the specimen's marker line.
Science
Various cross combinations (the GFP-KCBP line and the mCherry-TUB6 marker line; the kcbp-1 mutant and the GFP-TUB6 marker line; the rigor-KCBP line and the GFP-TUB6 marker line; the kcbp-1 mutant and the ABD2-GFP marker line; the rigor-KCBP line and the ABD2-GFP marker line) were performed to obtain corresponding materials to observe the dynamics of KCBP, MTs, and F-actin, respectively.
Science
8 Repeat this step, following the marker line, to make a border of knotted tails all around the edge of your rug.
News & Media
The strong atomic transition line of fluorine at 731.102 nm was used as the marker line to quantify the fluoride concentration levels.
Science
They take turns throwing a quiver of three tiny javelins from a marker line, known as the oche (pronounced like "hockey" with a dropped "h"), which lies exactly seven feet and nine and a quarter inches from the board.
News & Media
Online play is supported, but having four players battling through three modes – Race, stacking bricks to a marker line at speed; Survival, a last-one-standing death match where each dropped brick inflicts damage; and Puzzle, where bricks are stacked with only one solution – is supremely fun face to face.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
17 human-written examples
Marker lines employed in the study.
Science
Marker lines pPLT1 gPLT1-YFP, pPLT1 gPLT1-YFPand pPLT2 PLT2-YFP pPLT2 PLT2-YFP
Science
Several ampules of 2% lidocaine containing 1 100,000 epinephrine were injected around the marking line.
The cable tensions of the optimal state are shown in Fig. 3 with triangular marked line.
His trade-mark line, after all, is: "your fired".
News & Media
Expert writing Tips
Best practice
When using "marker line" in scientific writing, clearly define what the line represents and its significance in the context of your study or experiment. This ensures clarity and reproducibility.
Common error
Do not use "marker line" without specifying its purpose. If the marker indicates measurement, say "measurement marker line". If it indicates orientation, say "orientation marker line". Be specific.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "Marker line" functions primarily as a noun phrase, often used to identify a specific line that serves as a reference point, boundary, or indicator. Ludwig provides examples across various scientific and practical contexts to support its usage.
Frequent in
Science
60%
News & Media
20%
Wiki
20%
Less common in
Formal & Business
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "Marker line" is a common noun phrase used to denote a reference point, boundary, or indicator, as identified by Ludwig. Its grammatical function is straightforward, and it serves to clearly designate a visual cue for orientation or measurement. Ludwig AI confirms its correct usage. While its register varies across contexts, it is predominantly found in scientific, news, and practical guides. To ensure clarity, specify the purpose of the "marker line" and avoid ambiguity in its application.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
Reference line
Emphasizes the use of the line as a point of reference or comparison.
Demarcation line
Highlights the line's function in setting a clear boundary or separation.
Boundary line
Focuses on the line as a border or limit.
Guideline
Suggests the line is meant to guide or direct.
Fiducial marker
Implies the line serves as a fixed reference point for measurements or alignment.
Scoreline
Focuses on using a line to make a permanent crease or mark on a material.
Indication line
Stresses the line's role in indicating a specific location or point.
Orientation line
Highlights the line's function in establishing or maintaining orientation.
Alignment mark
Focuses on the mark serving to align elements
Datum line
Denotes a reference line from which measurements are made.
FAQs
How can I use "Marker line" in a sentence?
The phrase "Marker line" is used to denote a line that serves as a reference or indicator. For example, "The surveyor used a marker line to define the property boundary."
What are some alternatives to "Marker line"?
You can use alternatives like "reference line", "boundary line", or "guideline" depending on the specific context.
In scientific contexts, is "Marker line" appropriate?
Yes, "Marker line" is appropriate in scientific contexts, particularly when describing experimental setups or measurement procedures. However, ensure clarity by specifying the type of marker, such as "orientation marker line".
What's the difference between "Marker line" and "Marking line"?
"Marker line" generally refers to a pre-existing or intentionally placed line for reference, while "marking line" often describes the act of creating a line. The phrase "marking line" often implies a more active or process-oriented meaning.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested