d(a)ɪˈɹɛk.ʃən ˈfəʊ.kəs ˈfoʊ.kəs

the concentration of attention or energy on something the focus of activity shifted to molecular biology he had no direction in his life a point of convergence of light (or other radiation) or a point from which it diverges a central point or locus of an infection in an organism the focus of infection