a point of convergence of light (or other radiation) or a
point from which it diverges Synonym(s):focus, focal point
a central point or locus of an infection in an organism; "the focus of infection" Synonym(s):focus, focal point, nidus
the concentration of attention or energy on something; "the focus of activity shifted to molecular biology"; "he had no direction in his life" Synonym(s):focus, focusing, focussing, focal point, direction, centering
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