deca

deca-

a combining form meaning “ten,” used in the formation of compound words: decapod.
Also, especially before a vowel, dec-.
Compare deci-, deka.


Origin:
< Greek deka-, combining form of déka ten; cognate with Latin decem

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World English Dictionary
deca-, deka-, dec- or dek-
 
prefix
denoting ten: decagon. In conjunction with scientific units the symbol da is used
 
[from Greek deka]
 
deka-, deka-, dec- or dek-
 
prefix
 
[from Greek deka]
 
dec-, deka-, dec- or dek-
 
prefix
 
[from Greek deka]
 
dek-, deka-, dec- or dek-
 
prefix
 
[from Greek deka]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

deca-
(before a vowel, dec-), comb. form meaning "ten," from Gk. deka "ten" (see ten). In the metric system, "multiplied by ten;" while deci- means "divided by ten."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

deca- or dec- or deka- or dek-
pref.
Ten: decane.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
deca-  
A prefix that means "ten," as in decahedron, a polygon having ten faces.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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