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zygomatic arch n the arch of bone that extends along the front or side of the skull beneath the orbit and that is formed by the union of the temporal process of the zygomatic bone in front with the zygomatic process of the temporal bone behind
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(zygoma)
the horizontal arch of bone on either side of the face, just below the eyes, formed by connected processes of the zygomatic and temporal bones. See skull.
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arcus zygomaticus.Medical dictionary. 2011.