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1. Genetics
a. (of an allele) producing the same phenotype in the organism irrespective of whether the allele of the same gene is identical or dissimilar
b. (of a character) controlled by such a gene
2. Music of or relating to the fifth degree of a scale
3. Ecology (of a plant or animal species within a community) more prevalent than any other species and determining the appearance and composition of the community
4. Genetics
a. a dominant allele or character
b. an organism having such an allele or character
5. Music
a. the fifth degree of a scale and the second in importance after the tonic
b. a key or chord based on this
6. Ecology a dominant plant or animal in a community



(in architecture), the major element in the composition of an ensemble. It is usually a tall building, for example, the main building of Moscow State University on Lenin Hills in Moscow, or the vertical part of one of the buildings, such as the tower and spire of the Admiralty Building in Leningrad. Rising above the surrounding structures, the dominant marks the focal point in the spatial arrangement of the ensemble.



(in music), a harmonic function of a major or minor scale exhibiting a strong tendency toward the tonic. The fifth degree of the scale is the basis of the dominant chord and is itself called the dominant. Chords built on the seventh and third degrees of the scale also fulfill the function of a dominant. The tendency of dominant chords toward the tonic is related to the presence of the leading tone in the chords. The resolution of the dominant into the tonic establishes the tonality with greatest certainty. The tonality whose tonic is the basic dominant is called dominant.



in physiology, a focus of excitation in the central nervous system that temporarily determines the nature of the body’s response to external and internal stimulation.

The dominant nerve center (or group of centers) is highly excitable and capable of maintaining this elevated excitability for a long time—even after the initial stimulus is no longer active. While summing the relatively weak stimuli of other centers, the dominant simultaneously exerts an inhibitory effect on them. Under natural conditions the dominant is formed under the influence of reflex excitation or after certain hormones have acted on the nerve centers. A dominant can be created experimentally by applying a weak electric current or certain drugs directly to the nerve centers. The dominance of some nerve centers over others was first described by N. E. Vvedenskii in 1881.

In elucidating the mechanisms of formation of conditioned reflexes, I. P. Pavlov pointed out that the sustained elevation of excitability of various regions of the cerebral cortex largely determines the dynamics of higher nervous activity both in pathology and in health. A. A. Ukhtomskii formulated the main elements of the theory of the dominant as a general principle of function of nerve centers on the basis of experiments that he and his co-workers performed between 1911 and 1923. The function of a dominant is made apparent in the readiness of an organ to function and maintain its functional state. The dominant in the higher brain centers is the physiological basis of a number of mental phenomena, such as attention.


Ukhtomskii, A. A. Dominanta. Moscow-Leningrad, 1966.
Mekhaniimy dominanty. Leningrad, 1967. (Symposium materials.)


References in periodicals archive ?
Notably, Jahzara, dominantly socializing, and Khalli, fully socializing, scored higher on the midterm and final despite significantly lower TABE reading level equivalents, grade 6.
As an insider-outsider or educator-researcher seeking to understand the complexities of teaching, we interrogated the teachers' beliefs, dilemmas, biasness and prejudices embedded in their reflective narratives on experiences in curriculum work within an education system which is dominantly centralized and highly routinized.
The first goal came from another good passage of play fromthe midfield and ended in a pin-point pass fromCousins to Lloyd who dominantly sent the ball into the back of the net, leaving the keeper still standing on her line.
com)-- Hun Technology president and founder Ferenc Ledniczky today announced that the company anticipates a hiring blitz, pre dominantly in Boca Raton.
I played conveniently and dominantly from the start on my own service game, and had many opportunities on his, however, I was less successful.
money supply but was dominantly on account of surge in food prices.
Following treatment of cells with VK(2), there was an increase in gap junctional intercellular communication activity, accompanied by up-regulation of connexin 32 (Cx32), dominantly expressed in normal hepatocyte.
Researchers are seeking 300 volunteers with a biological parent with a known genetic mutation causing rare and typically early-onset forms of the disorder to join the Dominantly Inherited Alzheimer's Disease Network (DIAN) study, a six-year, $16 million study funded by the National Institute on Aging (NIA), part of the National Institutes of Health (NIH).
Fuchs' dystrophy is dominantly inherited, meaning it passes to the next generation about 50 percent of the time.
In this paper, we confirm the idea that tropical and subtropical monsoons respond dominantly and directly to changes in Northern Hemisphere summer insolation on orbital timescales,' said Cheng.
The dollar's weakness vis-a-vis the euro made oil, which is traded dominantly in dollars, look cheap, however, stirring the rapid influx of short-term funds into the oil market, traders said.
The dominantly ethnic-Chinese leadership in Singapore has made it a priority to ensure religious and racial harmony in the city-state, which was torn by violent race riots in the 1950s and early 1960s.