Definition of "predominant"

predominant

/pɹɪˈdɒmɪnənt/

adjective
comparative more predominant, superlative most predominant
1. Common or widespread; prevalent.
2. Significant or important; dominant.
  Quotations
  On Lord Marchmont's return, he, too, was struck with the unusual appearance of confusion in his hall; but anger was his predominant sensation when he heard that Henrietta had actually set off without waiting one moment.
  1837, L[etitia] E[lizabeth] L[andon], “The Truth of Presentiments”, in Ethel Churchill: Or, The Two Brides. […], volume II, London: Henry Colburn, […], page 305
noun
plural predominants
1. (music) A subdominant.