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a combining form meaning “wet,” “moist,” “moisture,” used in the formation of compound words:
Origin of hygro-
< Greek, combining form of hygrós wet, moist Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for hygro-


combining form
indicating moisture: hygrometer
Word Origin
from Greek hugros wet
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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Word Origin and History for hygro-

word-forming element meaning "wet, moist, moisture," from Greek hygro-, comb. form of hygros "wet, moist, fluid," from PIE root *wegw- "wet."

Online Etymology Dictionary, © 2010 Douglas Harper
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hygro- in Medicine

hygro- or hygr-
Moisture; liquid; humidity: hygroscopic.

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