Focal - definition of focal by The Free Dictionary
fo·cal (fō′kəl) adj. 1. Of or relating to a focus. 2. Placed at or measured from a focus. fo′cal·ly adv. focal (ˈfəʊkəl) adj 1. (General Physics) of or relating to a focus 2. (General Physics) situated at, passing through, or measured from the focus ˈfoca...