Dominant Dominant Jumper dress The word dominant has several possible meanings:

In Music history, the dominant or dominant note (second most important) of a key is that which is a Perfect fifth above the tonic; in Just intonation the note whose pitch is 1.5 times the frequency of the tonic note's pitch and in one tone Equal temperament is 7 semitones or 700 cents above the tonic. The dominant of a church mode was the tenor or Reciting tone of psalm tones.
In biology and in populations, a group, pair or, or individual can be the dominant animal in a group. Dominant animals take a higher position in a "peaking order", and may be the only animals allowed to breed within a group.
In Genetics, a Dominant gene is one that is expressed when heterozygous with a recessive allele of the gene. It is a feature of diseases that inherit in an Autosomal dominant fashion.
In BDSM, Dominant is a more precise term for a top in BDSM - see Dominant (BDSM)