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HG

1.
High German.
2.
British. Home Guard.

Hg

Symbol, Chemistry
1.
Origin
< Neo-Latin hydrargyrum, for Latin hydrargyrus (by analogy with aurum, argentum, etc.) < Greek hydrárgyros literally, liquid silver (hydr- hydr-1 + árgyros silver)

hg

1.
hectogram; hectograms.

H.G.

1.
High German (def 1).
2.
His Grace; Her Grace.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for HG

hg

abbreviation
1.
hectogram

Hg

Chemical symbol
1.
mercury
Word Origin
from New Latin hydrargyrum

HG

abbreviation
1.
High German
2.
His (or Her) Grace
3.
(formerly, in Britain) Home Guard
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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HG in Medicine

Hg
The symbol for the element mercury.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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HG in Science
Hg  
The symbol for mercury.
mercury
  (mûr'kyə-rē)   
Symbol Hg
A silvery-white, dense, poisonous metallic element that is a liquid at room temperature and is used in thermometers, barometers, batteries, and pesticides. Atomic number 80; atomic weight 200.59; melting point -38.87°C; boiling point 356.58°C; specific gravity 13.546 (at 20°C); valence 1, 2. See Periodic Table.

Our Living Language  : Like a few other elements, mercury has a chemical symbol, Hg, that bears no resemblance to its name. This is because Hg is an abbreviation of the Latin name of the element, which was hydrargium. This word in turn was taken over from Greek, where it literally meant "water-silver." With this name the Greeks were referring to the fact that mercury is a silvery liquid at room temperature, rather than a solid like other metals. Similarly, an older English name for this element is quicksilver, which means "living silver," referring to its ability to move like a living thing. (The word quick used to mean "alive," as in the Biblical phrase "the quick and the dead.") The name mercury refers to the fact that the element flows about quickly: the name comes from the Roman god Mercury, who was the swift-footed messenger of the gods.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Related Abbreviations for HG

hg

  1. hectogram
  2. hemoglobin

Hg

  1. Haggai
  2. mercury

HG

  1. High German
  2. Holy Grail
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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