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pos·tero·an·te·ri·or .päs-tə-rō-an-'tir-ē-ər adj involving or produced in a direction from the back toward the front (as of the body or an organ) <a \posteroanterior radiograph>
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adj.
from the back to the front. In radiology it denotes a view in the coronal plane.
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pos·tero·an·te·ri·or (pos″tər-o-an-tērґe-ər) from back to front, or from the posterior to the anterior surface, such as the direction of a radiographic projection.Medical dictionary. 2011.