Dictionary.com
Thesaurus.com
Showing results for palladium. Search instead for pentapalladium.
Jump To:
  • palladium
    palladium
    noun
    a rare metallic element of the platinum group, silver-white, ductile and malleable, harder and fusing more readily than platinum: used chiefly as a catalyst and in dental and other alloys. Pd; 106.4; 46; 12 at 20°C.
  • Palladium
    Palladium
    noun
    Also Palladion a statue of Athena, especially one on the citadel of Troy on which the safety of the city was supposed to depend.

palladium

1 American  
[puh-ley-dee-uhm] / pəˈleɪ di əm /

noun

Chemistry.
  1. a rare metallic element of the platinum group, silver-white, ductile and malleable, harder and fusing more readily than platinum: used chiefly as a catalyst and in dental and other alloys. Pd; 106.4; 46; 12 at 20°C.


Palladium 2 American  
[puh-ley-dee-uhm] / pəˈleɪ di əm /

noun

  • Palladia
    plural
  1. Also Palladion a statue of Athena, especially one on the citadel of Troy on which the safety of the city was supposed to depend.

  2. (usually lowercase) anything believed to provide protection or safety; safeguard.


palladium 1 British  
/ pəˈleɪdɪəm /

noun

  1. something believed to ensure protection; safeguard

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Palladium 2 British  
/ pəˈleɪdɪəm /

noun

  1. a statue of Pallas Athena, esp the one upon which the safety of Troy depended

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

palladium 3 British  
/ pəˈleɪdɪəm /

noun

  1. a ductile malleable silvery-white element of the platinum metal group occurring principally in nickel-bearing ores: used as a hydrogenation catalyst and, alloyed with gold, in jewellery. Symbol: Pd; atomic no: 46; atomic wt: 106.42; valency: 2, 3, or 4; relative density: 1202; melting pt: 1555°C; boiling pt: 2964°C

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

palladium Scientific  
/ pə-lādē-əm /
  1. A malleable, ductile, grayish-white metallic element that occurs naturally with platinum. It is used as a catalyst in hydrogenation and in alloys for making electrical contacts and jewelry. Atomic number 46; atomic weight 106.4; melting point 1,552°C; boiling point 3,140°C; specific gravity 12.02 (20°C); valence 2, 3, 4.

  2. See Periodic Table


Other Word Forms

Noun Inflected Forms

Etymology

Origin of palladium1

Special use of Palladium; named (1803) after the asteroid Pallas, then newly discovered; see -ium

Origin of Palladium2

< Latin Palladium < Greek Palládion, noun use of neuter of Palládios of Pallas, equivalent to Pallad- (stem of Pallás ) Pallas + -ios adj. suffix

Explanation

Palladium is an extremely valuable precious metal. Closely related to platinum, palladium is also silvery-white and shiny. When William Hyde Wollaston discovered palladium in 1803, he named it after one of the largest known asteroids, Pallas. Earlier, the word had been used to mean "a source of protection," inspired by the Greek goddess Athena, who was commonly referred to as Pallas. The precious metal shares chemical properties with many others, and it's used to clean the exhaust from cars, as well as in jewelry and electronics.

Keep Reading on Vocabulary.com

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The team found that phosphite, a form of phosphorus naturally found in hydrothermal vents, can react with organic compounds in the presence of palladium and produce reactions associated with metabolic phosphorylation.

From Science Daily Aug. 12, 2026

For example, gold palladium catalysts are used to produce vinyl acetate, an essential ingredient in many plastics and other products.

From Science Daily Jul. 12, 2026

Catalytic converters need rare elements like palladium and platinum, precious metals more at home in a jewelry box than in a car.

From Los Angeles Times Mar. 26, 2026

Dead batteries yield lithium, cobalt and nickel; LED screens contain germanium; circuit boards hold platinum and palladium; hard disks store rare earths -- e‑waste has long been described as a "gold mine" for critical minerals.

From Barron's Feb. 18, 2026

Copper, tin, zinc, palladium, lead, cadmium, platinum and aluminium can be beaten into thin leaves, but not to the same extent as gold or silver.

From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" by Various

The Sex Pistols headlining the Palladium in New York City or the Agora in Cleveland wouldn’t have made splashy headlines.

From Salon Aug. 10, 2026

Dave Chappelle The Palladium We’re not allowed to say anything about went on at the Dave Chappelle three-show residency at the Palladium other than the fact that it was an evening of music and comedy.

From Los Angeles Times May 13, 2026

This Palladium set is your biggest hometown show in your two decades as a band.

From Los Angeles Times Apr. 30, 2026

Allen, who also begins her three-night run of gigs at the London Palladium theatre on Friday, said: "I'm so pleased to make this special painting available for everyone to see."

From BBC Mar. 20, 2026

In a dark night he climbed the wall with Odysseus’ help, found the Palladium and took it to the camp.

From "Mythology: Timeless Tales of Gods and Heroes" by Edith Hamilton

The most appealing part of the package is a new documentary, R.E.M. by MTV, culled from the material and directed by Alex Young, which will also air on Palladia and VH1 Classic.

From BusinessWeek Nov. 26, 2014

TV rights to air "This Is It" on its MTV and BET family of networks -- including VH1 and Palladia, as well as MTV and BET -- for six years.

From Reuters Jun. 21, 2010

Palladia was a master at building churches, convents and palaces.

From Time Magazine Archive

He remembered seeing her, eighty years ago, on the stage of the Palladia.

From Rich Living by Michael Cathal

There also exists a set of small Mycenaean relics called Palladia, found at Mycenae, Spata and in the earliest strata of the Acropolis at Athens.

From Homer and His Age by Andrew Lang

Vocabulary.com logo
by dictionary.com

Join 12,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training