A point of convergence of light (or other radiation) or a point from which it diverges.

synoniem: focus.

Nederlands: brandpunt, focus
Pools: fokus, ognisko

A central point or locus of an infection in an organism.

synoniemen: focus, nidus.

Nederlands: infectiehaard

The concentration of attention or energy on something.

synoniemen: centering, direction, focus, focusing, focussing.

Nederlands: focus, scherpstelling