PALLADIUMS
Noun
palladiums
plural of palladium
Source: Wiktionary
PALLADIUM
Pal*la"di*um, n. Etym: [L., fr. Gr.
1. (Gr. Antiq.)
Definition: 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. Etym: [NL.] (Chem.)
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition