Definition of dominant adjective from the Oxford Advanced Learner's Dictionary

      

    dominant

     adjective
    adjective
    BrE BrE//ˈdɒmɪnənt//
     
    ; NAmE NAmE//ˈdɑːmɪnənt//
     
    Genetic engineering
     
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  1. 1more important, powerful or noticeable than other things The firm has achieved a dominant position in the world market. The dominant feature of the room was the large fireplace.
  2. 2(biology) a dominant gene causes a person to have a particular physical characteristic, for example brown eyes, even if only one of their parents has passed on this gene compare recessive See related entries: Genetic engineering
  3. Word Origin late Middle English: via Old French from Latin dominant- ‘ruling, governing’, from the verb dominari, from dominus ‘lord, master’.Extra examples Banks have a dominant role in most countries’ economies. London is dominant within the UK economy. No one group appears to be overwhelmingly dominant. The state of the economy has been the dominant theme of the election.
See the Oxford Advanced American Dictionary entry: dominant