The phrase "a straightforward definition of" is correct and usable in written English.
You can use it when you want to introduce a clear and simple explanation of a term or concept.
Example: "In this article, we will provide a straightforward definition of artificial intelligence to help readers understand its basic principles."
Alternatives: "a clear explanation of" or "a simple description of".
At that time, scientists were operating with a straightforward definition of the gene, based on the "central dogma" of biology: DNA makes RNA, and RNA makes proteins.
That sounds like a straightforward definition of the "penalties on disfavored viewpoints" that the Supreme Court said would violate the Constitution.
The energy measure allows for a straightforward definition of compound modes and for a computational determination of the lower bound strength.
On top of that, this Lagrangian framework allows for a straightforward definition of the conversion efficiency of entrained vapor to surface rain and provides detailed information about the pathway of water molecules in both physical and microphysical phase space.
Here, we attempt such an approach using a straightforward definition of one of the most intuitive structural properties of sequential data, aggregation.
In order to avoid misinterpretation we used a straightforward definition of TD.
This way of thinking begins with a straightforward definition: Management is responsibility for the performance of a group of people.
"Quarry" has quite a straightforward definition: "a hunted animal; prey".
So it is hard to give a straightforward definition.
The most straightforward definition of species relies on morphology and related features: a species is a group of organisms with certain common features, such as hairlessness, bipedalism, and rationality.
The authors found that the depth of global integration, probably the most straightforward definition of globalisation, fell sharply after 2008, by nearly one-tenth.
