Gd

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Gd

GD

abbr.

1. garbage disposal

2. grand duchy

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

gd

the internet domain name for

(Computer Science) Grenada

Gd

the chemical symbol for

(Chemistry) gadolinium

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

Gd

Chem. Symbol.

gadolinium.

gd.

1. good.

2. guard.

Gd

The symbol for gadolinium.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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Noun	1.	GD - a nerve agent easily absorbed into the body; a lethal cholinesterase inhibitor that is highly toxic when inhaled soman organophosphate nerve agent - any of a series of nerve agents containing organophosphate compounds first synthesized by German chemists in 1936; in World War II the Germans tested them in concentration camps but not on the battlefield; Iraq is alleged to have used them against Iran and against the Kurds
	2.	Gd - a ductile silvery-white ductile ferromagnetic trivalent metallic element of the rare earth group atomic number 64, gadolinium metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. gadolinite, ytterbite - a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium samarskite - a complex black mineral occurring in pegmatites