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xero-

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  1. a combining form meaning “dry,” used in the formation of compound words: xerophyte.
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Also especially before a vowel, xer-.

Origin of xero-

combining form of Greek xērós dry
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for xero-

xero-

before a vowel xer-

combining form
  1. indicating drynessxeroderma
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Word Origin

from Greek xēros dry
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

Word Origin and History for xero-

before vowels, xer-, word-forming element meaning "dry," from Greek xero-, comb. form of xeros "dry" (see xerasia).

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Online Etymology Dictionary, © 2010 Douglas Harper

xero- in Medicine

xero-

pref.
  1. Dry; dryness:xeroderma.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.