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a combining form meaning “tenth,” used in words denoting units of the metric system (deciliter); on this model, extended to other systems (decibel).
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Origin of deci-
<French déci-<Latin decimus tenth
Words nearby deci-
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for deci-
Thus the -m in dece-m, as compared with δέκα, is reasonably supposed to be the -m- in deci-m-us.The Natural History of the Varieties of Man|Robert Gordon Latham
British Dictionary definitions for deci-
denoting one tenth; 10 –1decimetre Symbol: d
Word Origin for deci-
from French déci-, from Latin decimus tenth
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
Medical definitions for deci-
One tenth (10-1):decibel.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for deci-
A prefix that means one tenth, as in deciliter, one tenth of a liter.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.