datum plane
datum level or datum line
- surveying the horizontal plane from which heights and depths are calculated
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
datum plane
(dā′təm, dăt′əm, dä′təm)- An arbitrary plane used as a base from which to make craniometric measurements.
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The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.