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a combining form representing sacrum, in compound words:
sacroiliac. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Word Origin and History for sacro-

word-forming element meaning "of or involving the sacrum, the bone at the base of the spine. E.g. sacro-iliac.

Online Etymology Dictionary, © 2010 Douglas Harper
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sacro- in Medicine

sacro- or sacr-
Sacrum: sacroiliac.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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