focal

 
Pronunciation: /ˈfəʊk(ə)l/

adjective

  • 1relating to the centre or most important part: the focal symbol of sovereignty is the crown
  • 2 Optics relating to the focus of a lens.
  • 3(of a disease or medical condition) occurring in one particular site in the body.

Derivatives

focally

adverb

Origin:

late 17th century: from modern Latin focalis, from Latin focus, or directly from focus