plural loci
ˈlō-ˌsī 
-ˌkī,
-ˌkē
1
b
: a center of activity, attention, or concentration
In democracy the locus of power is in the people.—
H. G. Rickover
H. G. Rickover2
: the set of all points whose location is determined by stated conditions
3
: the position in a chromosome of a particular gene or allele
Examples of locus in a Sentence
The area became a locus of resistance to the government.
an area of the Southwest that has been the locus of a number of New Agey movements
Recent Examples on the Web
The result is a shift in the locus of error.
—Tomas Chamorro-Premuzic, Forbes.com, 27 May 2026
Nagi is a farming village, a locus of military activity, and a place still largely in thrall to patriarchal dynamics.
—Justin Chang, New Yorker, 27 May 2026
The South Terrace, with bucolic and far-reaching views, is already the locus of socialising spilling down to the 25-meter pool.
—Condé Nast, Condé Nast Traveler, 18 May 2026
The scientists identified 79 loci, or the location of a gene on a chromosome, that qualify as risk variants.
—Noah Lyons, San Diego Union-Tribune, 8 May 2026
See All Example Sentences for locus
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Tomas Chamorro-Premuzic, Forbes.com, 27 May 2026
Nagi is a farming village, a locus of military activity, and a place still largely in thrall to patriarchal dynamics.
—Justin Chang, New Yorker, 27 May 2026
The South Terrace, with bucolic and far-reaching views, is already the locus of socialising spilling down to the 25-meter pool.
—Condé Nast, Condé Nast Traveler, 18 May 2026
The scientists identified 79 loci, or the location of a gene on a chromosome, that qualify as risk variants.
—Noah Lyons, San Diego Union-Tribune, 8 May 2026
See All Example Sentences for locus
Cite this Entry
“Locus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/locus. Accessed 31 May. 2026.
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Medical Definition
locus
noun
lo·cus
ˈlō-kəs
plural loci
ˈlō-ˌsī, -ˌkī also -ˌkē
1
: a place or site of an event, activity, or thing
the integrity of the tissues determines the extent and locus of the damage—Sylvia E. Hines
Sylvia E. Hines2
: the position in a chromosome of a particular gene or allele
Legal Definition
locus
noun
lo·cus
ˈlō-kəs
: the place connected with a particular event having legal significance
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