Definition of locus in US English:

locus

noun

  • 1technical A particular position, point, or place.

    ‘it is impossible to specify the exact locus in the brain of these neural events’
    • ‘It seems to understand that the locus of failure isn't external and partial.’
    • ‘He is too quick to conclude that the Web, as a locus for and medium of art, is a failure.’
    • ‘It all revolved around the idea that the body is a locus of memory, and it brought that idea into so many dimensions.’
    • ‘Next, the material is coded into discrete images and each of the images is inserted in the appropriate order into the various loci.’
    • ‘The locus of these thick or thin spots can be mapped by radar back to the site of origin.’
    emergency, emergency situation, urgent situation, crisis, potential crisis
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    1. 1.1 The effective or perceived location of something abstract.
      ‘the real locus of power is the informal council’
      • ‘They will be more gravely weakened if pension funds, an enduring locus of labor power, are privatized.’
      • ‘Although the Roman government was intact, the real locus of power in ancient Rome was the family.’
      • ‘The unfettered, pluralistic nature of the Internet is also changing the locus of power of the news media.’
      • ‘For a peaceful world that promotes international democracy, the locus of power and influence needs shifting.’
      • ‘Second, as a social institution the church quickly became a contending locus of power in the Roman Empire.’
      location, place, position, situation, locality, whereabouts, locale, spot, scene, setting
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    2. 1.2Genetics The position of a gene or mutation on a chromosome.
      • ‘Genes at a locus that differ by mutations are known as alleles or haplotypes.’
      • ‘These data indicated that the cloned genes represented the genomic loci that were altered in the original rye strains.’
      • ‘Individual alleles of three loci demonstrating high gene diversity were cloned and sequenced.’
      • ‘The data included results of genomic typing at polymorphic loci at or near genes of the autoimmune inflammatory response.’
      • ‘The very large pine genomes are highly repetitive, and microsatellite loci also occur as gene families.’
      vicinity, surrounding area, area, neighbourhood, district, region, environs, zone, locale, territory
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  • 2Mathematics
    A curve or other figure formed by all the points satisfying a particular equation of the relation between coordinates, or by a point, line, or surface moving according to mathematically defined conditions.

    • ‘Where lines were not common to multiple loci, lines are labeled only to species.’
    • ‘Preliminary mapping of the remaining suppressors demonstrates that they define several distinct loci.’
    • ‘Then the locus of centers of all circles passing through A and orthogonal to C is a straight line.’
    • ‘The catenary is the locus of the focus of a parabola rolling along a straight line.’
    • ‘The curve can be considered as the locus of a point P defined as follows.’
    surrounding district, surrounding area, neighbourhood, locality, locale, local area, area, district, region, quarter, sector, territory, domain, place, zone
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Origin

Early 18th century: from Latin, ‘place’.

Pronunciation

locus

/ˈloʊkəs//ˈlōkəs/