palladium
/pə'leidjəm/
Definition
- Noun:
- A chemical element: A rare, silver-white metallic element belonging to the platinum group of metals. It is malleable, ductile, and does not tarnish in air at ordinary temperatures.
- A protective symbol (archaic): In classical mythology and by extension, a source of protection or safeguard. This meaning is now rare and primarily found in historical or literary contexts.
Examples of Usage
- Noun (Chemical Element):
- Noun (Protective Symbol - Archaic): (This usage is historical.)
Advanced Usage
- "a palladium of liberty": A phrase used in political or philosophical writing to describe something viewed as a fundamental guarantee or safeguard of freedom.
Variants and Related Words
- Palladian (adj): Relating to or containing palladium.
- Palladious (adj): Of or relating to palladium, especially with a valence of two. (Technical, chemistry)
Synonyms
- Element 46 (Technical): Referring to its atomic number.
- Pd (Symbol): The chemical symbol for palladium.
- Guardian (For the archaic sense): A defender or protector.
Related Phrases
- Palladium black: A fine powder form of palladium used as a catalyst.
Noun
-
a silver-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
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