Pronunciation: (lō'kus), [key]
—pl. -ciPronunciation: (-sī, -kē, -kī), [key] -caPronunciation: (-ku). [key]
1. a place; locality.
2. a center or source, as of activities or power: locus of control.
3. Math.the set of all points, lines, or surfaces that satisfy a given requirement.
4. Genetics.the chromosomal position of a gene as determined by its linear order relative to the other genes on that chromosome.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.