The definition of a locus is where a person or thing is located.
(noun)An example of locus is the table upon which a glass is sitting.
See locus in Webster's New World College Dictionary
noun pl. loci
Origin: L: see local
See locus in American Heritage Dictionary 4
noun pl. lo·ci (-sīˌ, -kē, -kīˌ)
Origin:
Origin: Latin
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