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Pronunciation: an′ter-ō-pos-tēr′ē-or


  1. Relating to both front and rear.
  2. In x-ray imaging, describing the direction of the beam through the patient (projection) from anterior to posterior, an A-P projection of the abdomen; or the direction of view (A-P view) when a film is viewed as if one is facing the patient (anterior to posterior) regardless of projection.
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