WordReference Random House Unabridged Dictionary of American English © 2019
lo•ci  (lōsī, -kē, -kī),USA pronunciation n. 
  1. pl. of  locus. 

WordReference Random House Learner's Dictionary of American English © 2019
lo•cus /ˈloʊkəs/USA pronunciation   n.[countable]pl.  -ci 
    /-saɪ, -ki, -kaɪ/.USA pronunciation  
  1. a place;
    locality.
  2. a center or source, as of activities or power:The locus of control is headquarters.
See -loc-.
WordReference Random House Unabridged Dictionary of American English © 2019
lo•cus  (lōkəs),USA pronunciation n., pl.  -ci (lōkəs),USA pronunciation  -ca 
    (lōkəs),USA pronunciation 
  1. a place;
    locality.
  2. a center or source, as of activities or power:locus of control.
  3. Mathematicsthe set of all points, lines, or surfaces that satisfy a given requirement.
  4. Geneticsthe chromosomal position of a gene as determined by its linear order relative to the other genes on that chromosome.
  • Latin; Old Latin stlocus a place
  • 1525–35


Collins Concise English Dictionary © HarperCollins Publishers::

loci /ˈləʊsaɪ/ n
  1. the plural of locus



locus /ˈləʊkəs/ n ( pl loci /ˈləʊsaɪ/)
  1. (in many legal phrases) a place or area, esp the place where something occurred
  2. a set of points whose location satisfies or is determined by one or more specified conditions: the locus of points equidistant from a given point is a circle
  3. the position of a particular gene on a chromosome
Etymology: 18th Century: Latin



'loci' also found in these entries:
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