Electronic technologies may become, as their advocates predict, the dominant means of distributing creative works to those who wish to enjoy them.
The dominant means of transport during the Olympics was by railway.
Today, they still serve as the dominant means of transport.
Emphasis on tikkun olam ("repairing the world") as the dominant means of service to God.
Hence roads are the dominant means of passenger and freight transport in Canada.
In this context, dominant means prevailing or the majority view.
At a long distance (like in your example), radiation is the dominant means of heat transfer.
Here in California, initiatives have become a dominant means of setting government policy, not a supplemental one.
Food service has remained a dominant means of making a livelihood in the Chinese community.
Autosomal dominant means that a single abnormal gene will cause an abnormality.