orbital index
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orbital index
(′ör·bəd·əl ′in′deks)
(anthropology) The ratio of the orbital height, taken at right angles to the orbital width between the upper and lower orbital margins, times 100, to the orbital width, taken between the maxillofrontale and lateral margin of the orbit in such a manner that the line of the orbital width bisects the plane of the orbital entrance.
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McGraw-Hill Science & Technology Dictionary
McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.
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