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
a triplex of
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a triplex of" is correct and usable in written English.
It can be used to describe a set of three related items, concepts, or entities, often in a context where a grouping or combination is being discussed. Example: "The artist's latest exhibition features a triplex of themes: love, loss, and redemption."
✓ Grammatically correct
Science
News & Media
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
6 human-written examples
Also, even accounting for Chung's frugality, it is not clear how his salary at Rockwell less than sixty thousand dollars a year during the mid-eighties would have allowed himid-eighties wouldepair shave allowedex of rental apartments, and two himses, all atothe same time.
News & Media
Also, even accounting for Chung's frugality, it is not clear how his salary at Rockwell — less than sixty thousand dollars a year during the mid-eighties — would have allowed him to own an auto-repair shop, a triplex of rental apartments, and two houses, all at the same time.
News & Media
Reference values for RRs mRNAs were measured in Normal Human Bronchial Epithelial cells (NHBE) with qRT-PCR Syber Green assays and a triplex of Taqman probes.
Science
Specific measures realized, with qRT-PCR Syber Green assays and a triplex of Taqman probes, were extensively validated to establish Retinoid Receptors mRNAs reference values for in vivo normal human bronchial cells, lung tumors and cell lines.
Science
Reference values for RRs mRNAs expressions were first determined in normal lung tissues (NHBE), then the relative levels of RRs mRNAs were measured in several cell lines, comparing the results obtained with the two qRT-PCR methodologies: Syber Green and a triplex of Taqman probes.
Science
In this study, we used qRT-PCR analysis to measure RRs mRNAs expressions in several samples and compared the results obtained in Syber Green assays to those given by a triplex of Taqman probes that was conceived to save invaluable mRNA samples.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
54 human-written examples
(Mr. Bulus also owns a triplex penthouse of some 14,000 square feet in the Ipanema neighborhood of Rio overlooking the ocean, according to O Estado de S. Paulo, a Brazilian newspaper).
News & Media
On the 13th level — numbered the 14th — the Goulds built a triplex penthouse of 20 rooms and 8 baths.
News & Media
In this assay, a triplex consists of double-stranded DNA containing NF-κB p50 specifically binding sequences and a special design single-stranded DNA (Trigger) which is able to activate the hairpin DNA cascade amplifier (HDCA).
We used a triplex examination of lower extremities on admission, on days 7 and 14, and on clinical suspicion of DVT.
Science
At low H2Pht concentrations only an adsorption monolayer of product is formed, while at high reactant concentrations a more complex process is observed with the formation of a triplex structure, consisting of the adsorbed monolayer, an additional bi-dimensional layer (formed by a nucleation and growth process) and finally a three-dimensional deposit.
Science
Expert writing Tips
Best practice
Use "a triplex of" to specifically denote a group or set composed of three distinct elements, especially when emphasizing their combined effect or interaction. For example, "a triplex of challenges" suggests three interconnected difficulties.
Common error
Avoid using "a triplex of" when simply describing three unrelated items. The phrase implies a deliberate combination or interrelation. Instead, opt for "three" or "a group of three" if the connection is not significant.
Source & Trust
83%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a triplex of" functions as a prepositional phrase that modifies a noun, specifying that the noun consists of three interconnected or related elements. As evidenced by Ludwig, it highlights a purposeful grouping.
Frequent in
Science
50%
News & Media
50%
Formal & Business
0%
Less common in
Encyclopedias
0%
Wiki
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "a triplex of" is a grammatically sound prepositional phrase employed to describe a set of three interconnected items. As confirmed by Ludwig, this phrase is most commonly found in scientific and news media contexts, emphasizing the purposeful grouping of these elements. While not as frequent as simpler alternatives, it adds a layer of specificity when the relationship between the three items is important. The expert rating affirms its correct usage and presence in reputable sources, solidifying its role in formal communication.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
a combination of three
Specifies the exact number of elements in the grouping.
a set of three
Highlights the grouping as a defined set.
a trio of
Emphasizes the harmonious or aesthetic aspect of the three elements.
threefold
Focuses on the multiplication or increase by three.
triple
Implies a quantity three times as large or a group of three.
a trinity of
Suggests a sacred or deeply interconnected group of three.
a triad of
Emphasizes the balance and interdependence of the three elements.
a collection of three
Highlights the act of gathering or assembling three items.
a cluster of three
Suggests a close grouping of three items, often spatially.
a suite of three
Indicates a set of three items designed to be used together.
FAQs
How can I use "a triplex of" in a sentence?
Use "a triplex of" to indicate a set of three interconnected or related things. For example, "The project faces a triplex of challenges: funding, staffing, and resources".
What are some alternatives to "a triplex of"?
You can use alternatives such as "a combination of three", "a set of three", or "a trio of" depending on the context.
Is it grammatically correct to say "a triplex of"?
Yes, it is grammatically correct to use "a triplex of" when referring to a group consisting of three related items. It functions as a prepositional phrase modifying a noun.
What does "a triplex of" emphasize compared to "three"?
"A triplex of" emphasizes the interconnectedness or deliberate grouping of the three items, whereas simply saying "three" only indicates quantity without implying any specific relationship.
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
83%
Authority and reliability
4.1/5
Expert rating
Real-world application tested