The phrase "a defining test for" is correct and usable in written English.
It can be used when discussing a significant or crucial evaluation that determines the quality or effectiveness of something.
Example: "The new software update will serve as a defining test for the system's overall performance and reliability."
Alternatives: "a crucial assessment for" or "a key evaluation for".
It will also be a defining test for the role government incentives will play in further driving the expansion of solar power.
They are jointly threatened by the firefighters, a challenge regarded by them both as a defining test for their own reputations and that of New Labour as a whole.
As Congress's debate over health-care legislation lumbers toward a defining test for the Obama presidency, partisans on both sides of another issue -- immigration -- escalated their own proxy war this week, concluding that the fates of the two issues have become politically linked.
When Danielson followed with his great run in 1966, it was still considered a defining test of human capacity for speed and endurance.
The Breast Health Global Initiative defines testing for ER status as a "basic level" of pathology evaluation for breast cancer in low and middle income countries [ 32, 33].
We design a measurement environment, that emulates this new type of service, define tests for users to assess the QoE, derive Key Influence Factors (KIF) and influences of content and perception from our results.
"We have defined tests for celiac disease, but with gluten sensitivity it's somewhat ethereal.
So the recall of parliament on Friday to debate British bombing raids against Islamic State (Isis) in Iraq, and possibly also in Syria, is a defining pre-election test for the Labour leader in a sense that this week's speech, wallowing in its warm, bland bath of decency and togetherness, was not.
We show that when individuals self-select into participation conditional on some eligibility criteria a sharp RDD provides a natural framework to define a specification test for the non-experimental estimation of programme effects for participants away from the threshold.
Thus, we defined a specific test for cheating as a quantitative comparison of the growth or fitness of producers and non-producers in monoculture and co-culture, and recorded the location of the data pertaining to this test in each publication.
The cut-off selected to define a positive test for a continuous testing method should be selected to optimise the balance between sensitivity and specificity.
