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a combining form meaning “ten,” used in the names of metric units which are ten times the size of the unit denoted by the base word:
Also, especially before a vowel, dek-.
Compare deci-.
Origin of deka-
< Greek deka-, combining form of déka ten Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for dek


combining form
variants of deca-
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
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dek in Medicine

deka- or dek-
Variants of deca-.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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dek in Technology
The Free On-line Dictionary of Computing, © Denis Howe 2010
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