| Definitions | | focus |
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noun (foc, i , - , pl2=focuses)
- (countable) (optics) a point at which reflected or refracted rays of light converge.
- The heat of sunlight at the of a magnifying glass can easily set dry leaves on fire.
- (countable) (geometry) a point of a conic at which rays reflected from a curve or surface converge.
- (uncountable) (photography, cinematography) The fact of the convergence of light on the photographic medium.
- Unfortunately, the license plate is out of in this image.
- (uncountable) (photography, cinematography) The quality of the convergence of light on the photographic medium.
- During this scene, the boy"s face shifts subtly from soft into sharp .
- (uncountable) concentration of attention.
- I believe I can bring the high degree of required for this important job.
- (countable) the exact point of where an earthquake occurs, in three dimensions.
- The earthquake's was at exactly 37 degrees north, 18 degrees south, seventy five meters below the ground.
verb (focuses or, less commonly, focusses, focusing or, less commonly, focussing, focused or, less commonly, focussed)
- (transitive) To cause (rays of light, etc) to converge at a single point.
- (transitive) To adjust (a lens, an optical instrument) in order to position an image with respect to the focal plane.
- You'll need to the microscope carefully in order to capture the full detail of this surface.
- (transitive) (followed by on or upon) To concentrate one's attention.
- Focus on passing the test.
- (transitive) To make (a liquid) less diluted.
- (intransitive) To concentrate one"s attention.
- If you're going to beat your competitors, you need to .
Etymology: focusLatin, focus (hearth, fireplace), of unknown origin.
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Full Definition of focus
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