Gdn.

Brit.

/ˌdʒiːˈdiː/, U.S.

/ˌdʒiˈdi/

Origin: Formed within English, by clipping or shortening. Etymon: gadolinium n.

Etymology: Symbolic abbreviation for gadolinium n. First used in a French context (P.-É. Lecoq de Boisbaudran & M. Marignac 1886, in Compt. Rend. 102 902).

Chemistry.

The element gadolinium.

ΚΠ

1886 Nature 29 Apr. 623/1 At the author's [sc. M. Lecoq de Boisbaudran] suggestion, M. Marignac, discoverer of this rare earth, has at last definitely named it gadolinium (symbol Gd).

1922 T. M. Lowry Inorg. Chem. xxxiv. 673 Gadolinium forms a colourless oxide, Gd₂O₃, and colourless tervalent salts which show absorption bands only in the ultra-violet.

1978 H. M. Rosenberg Solid State (ed. 2) ix. 204 Gd is ferromagnetic, but the heavier rare earth metals from Tb to Tm show complex behaviour.

2010 Independent 2 Jan. 9/1 Gadolinium (Gd), shielding for nuclear reactors, compact discs.

This is a new entry (OED Third Edition, March 2012; most recently modified version published online March 2022).

单词	gd
释义	Gdn. Brit. /ˌdʒiːˈdiː/, U.S. /ˌdʒiˈdi/ Origin: Formed within English, by clipping or shortening. Etymon: gadolinium n. Etymology: Symbolic abbreviation for gadolinium n. First used in a French context (P.-É. Lecoq de Boisbaudran & M. Marignac 1886, in Compt. Rend. 102 902). Chemistry. The element gadolinium. ΚΠ 1886 Nature 29 Apr. 623/1 At the author's [sc. M. Lecoq de Boisbaudran] suggestion, M. Marignac, discoverer of this rare earth, has at last definitely named it gadolinium (symbol Gd). 1922 T. M. Lowry Inorg. Chem. xxxiv. 673 Gadolinium forms a colourless oxide, Gd₂O₃, and colourless tervalent salts which show absorption bands only in the ultra-violet. 1978 H. M. Rosenberg Solid State (ed. 2) ix. 204 Gd is ferromagnetic, but the heavier rare earth metals from Tb to Tm show complex behaviour. 2010 Independent 2 Jan. 9/1 Gadolinium (Gd), shielding for nuclear reactors, compact discs. This is a new entry (OED Third Edition, March 2012; most recently modified version published online March 2022). < n.1886
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