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hydrargyrum

[hahy-drahr-jer-uh m]
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noun
  1. mercury.
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Origin of hydrargyrum

1555–65; < New Latin, equivalent to Latin hydrargyr(us) (< Greek hydrárgyros mercury, equivalent to hydr- hydr-1 + árgyros silver) + -um, on model of aurum, etc.
Related formshy·drar·gyr·ic [hahy-drahr-jir-ik] /ˌhaɪ drɑrˈdʒɪr ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for hydrargyrum

hydrargyrum

noun
  1. an obsolete name for mercury (def. 1)
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Derived Formshydrargyric (ˌhaɪdrɑːˈdʒɪərɪk), adjective

Word Origin

C16: from New Latin, from Latin hydrargyrus from Greek hydrarguros, from hydro- + arguros silver
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 hydrargyrum

n.

"mercury, quicksilver," 1560s, from Latin hydrargyrus, from Greek hydrargyros, from hydr-, stem of hydor "water" (see water (n.1)) + argyros "silver" (see argent). Hence the chemical abbreviation Hg for the element mercury.

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Online Etymology Dictionary, © 2010 Douglas Harper
hydrargyrum in Medicine

hydrargyrum

(hī-drär′jə-rəm)
n.
  1. mercury
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.