"preponderant role" is a correct and usable phrase in written English.
You can use it in contexts to refer to the major role, power, or influence that one entity has over another. For example, "The infromation technology industry has come to play a preponderant role in the global economy."
Finally, the preponderant role of the microstructure on life reduction is highlighted.
"To suggest that somehow the U.S. in the second part of the 20th century has not played a preponderant role is to simplify and distort".
"People recite his verses in school, but there has never been a recognition of the preponderant role Neruda played in Chilean history".
For decades, France played a preponderant role in the making and unmaking of governments and economies in this part of the world.
Coarse Mg2Si precipitates are found to play a preponderant role in the void nucleation and ductile fracture process.
Overall, it was found that the competition between surface radiation and natural convection in right-angled triangular cavities filled with air plays a preponderant role.
The largest one is our flagship: the Voice of America, which is an organization with tremendous roots going back to the 1940's with preponderant roles in World War II, and also during the Cold War in addressing the issues in Eastern Europe.
The eurozone's biggest player and payer wants a deal that does not involve increasing its €211bn (£185bn) contribution to the European Financial Stability Facility's €780bn guarantees, does impose writedowns of at least 50% on private creditors to Greece and does not give an over-preponderant role to the ECB's limitless funds for fear of stoking up inflation and reducing politicians' primacy.
This fact, together with the reduction of the duration of the lag phase induced by 2,4-D due to PDR18 expression, indicates that the role of Pdr18 is preponderant during the period of adaptation to the herbicide, whereas the effect over the inhibition of specific growth exerted by the herbicide is not significant.
In these countries also, although the role of the state remained preponderant, market forces were increasingly relied upon to improve economic performance.
Even in the extraordinary situation where interaction concerns infrastructure, and where acceptance (understood as civil tolerance of infrastructure by absence of protest) is the preponderant form of social coordination, trust still plays an important role.
