Predominance is a noun referring to the condition of being predominant, or large in number. An example of the use of "predominance" is a sentence is, "The U.S. limit of two terms for a president protects against the predominance of one political party."
Another example is, "The United States has predominance in international basketball because of its history and the talent of its players." In this instance, predominance means holding excess power or control. Another sentence example is, "Football has predominance in the U.S. sports landscape as of 2014." In another example, "Despite an increasing number of women entering the field, there remains a predominance of men in auto sales as of 2014."