blind spot

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blind spot
  • noun
    The point of entry of the optic nerve on the retina, insensitive to light. (Intriguingly, within the part of the cortical map that represents the region of visual field that can be seen by only one eye, nerve cells receive input from the region of retina immediately surrounding the blind spot.)
    An area where a person's view is obstructed. (the rear-view mirror eliminates blind spots on both sides of the car)
    A point within the normal range of a transmitter where there is unusually weak reception. (He finally told his phone company to deactivate his roaming service - but not everyone does that, because it means they are then unable to make or receive phone calls in coverage blind spots.)

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