Longman Dictionary of Contemporary English homepage

Topic: OPTICS

focal point

 noun
     
focal point [countable]
1 the person or thing that you pay most attention to
focal point of
The pool is the focal point of the hotel.
focal point for
The new tax has been the focal point for much discussion.
2 technicalHPO the point at which beams of light meet after they have been through a lens
Definition of focal point from the Longman Dictionary of Contemporary English within
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