a combining form meaning “double,” “in pairs,” used in the formation of compound words: diplococcus.
Also, especially before a vowel, dipl-.

< Greek, combining form of diplóos twofold

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World English Dictionary
diplo- or (before a vowel) dipl-
combining form
double: diplococcus
[from Greek, from diploos, from di-1 + -ploos -fold]
dipl- or (before a vowel) dipl-
combining form
[from Greek, from diploos, from di-1 + -ploos -fold]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

diplo- or dipl-

  1. Double: diplococcus.

  2. Having double the basic number of chromosomes; diploid: diplont.

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