The phrase "a dominant source" is correct and usable in written English.
It can be used to refer to a primary or leading origin of something, such as information, power, or influence.
Example: "In the study of climate change, the burning of fossil fuels is identified as a dominant source of greenhouse gas emissions."
Alternatives: "a primary source" or "a leading source".
It is also a dominant source of innovation in the economy.
Remittances to sub-Saharan Africa support families and even some nations as a dominant source of GDP.
It often becomes a dominant source of income because no money is spent on the care of these dogs".
Plus the absence of large-scale illegal immigration removes a dominant source of the conflict in the United States.
He found that a climate system called the Atlantic multi-decadal oscillation (AMO) was a dominant source of variability in ice extent.
The company has more than a billion users around the world, and it has figured out how to become a dominant source of our mobile addiction.
If the market perceives that high oil prices are here to stay, this technology will become a dominant source of petrol, but it fails on the need to decarbonise the economy.
This species may grow under cooler conditions than F. graminearum (Miller 1994), and was a decade ago a more dominant source of DON in Norwegian cereals (Langseth and Elen 1997; Kosiak et al. 2003).
While squirt-flow is a known dominant source of dissipation and seismic attenuation in fluid saturated geological materials, we study its untapped potential to be incorporated in highly deformable elastic materials with embedded fluid-filled cavities for future engineering applications.
Gene loss therefore needs to be taken into account as a potential dominant source of phenotypic variation within clonal bacterial species.
A highly dominant source gene for the type I subfamily may have been newly created by retroposition and actively amplified in the Leuciscinae clade.
