Definitions for: Palladium

[n] a sliver-white metallic element of the platinum group that resembles platinum; occurs in some copper and nickel ores; does not tarnish at ordinary temperatures and is used (alloyed with gold) in jewelry

Webster (1913) Definition: Pal*la"di*um, n. [L., fr. Gr. ?, fr. ?, ?, Pallas.]
1. (Gr. Antiq.) Any statue of the goddess Pallas; esp., the
famous statue on the preservation of which depended the
safety of ancient Troy.

2. Hence: That which affords effectual protection or
security; a sateguard; as, the trial by jury is the
palladium of our civil rights. --Blackstone.

Pal*la"di*um, n. [NL.] (Chem.)
A rare metallic element of the light platinum group, found
native, and also alloyed with platinum and gold. It is a
silver-white metal resembling platinum, and like it permanent
and untarnished in the air, but is more easily fusible. It is
unique in its power of occluding hydrogen, which it does to
the extent of nearly a thousand volumes, forming the alloy
Pd2H. It is used for graduated circles and verniers, for
plating certain silver goods, and somewhat in dentistry. It
was so named in 1804 by Wollaston from the asteroid Pallas,
which was discovered in 1802. Symbol Pd. Atomic weight,
106.2.

Synonyms: atomic number 46, Pd

See Also: metal, metallic element

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