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a combining form meaning “pressure,” used in the formation of compound words:
Also, especially before a vowel, bar-.
Origin of baro-
combining form of Greek báros weight; akin to Sanskrit guru, Latin gravis, Gothic kaurus heavy Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for baro


combining form
indicating weight or pressure: barometer
Word Origin
from Greek baros weight; related to Latin gravis heavy
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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baro in Medicine

baro- or bar-
Weight; pressure: baroreceptor.

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