Main definitions of palladium in US English:

: palladium1palladium2

palladium1

noun

  • The chemical element of atomic number 46, a rare silvery-white metal resembling platinum.

    • ‘These metals include platinum, palladium, and rhodium.’
    • ‘But since it was divested of most of its assets, it now concentrates on mining rare metals such as platinum, palladium and rhodium in Africa and other regions.’
    • ‘To this group belong the important steel alloying elements nickel and manganese, as well as cobalt and the inert metals ruthenium, rhodium, palladium, osmium, iridium and platinum.’
    • ‘There is a growing interest in the assessment of health risks posed by increased human exposure to some platinum group metals, namely platinum, rhodium and palladium.’
    • ‘You can, with Kallitype, start with a noble metal, silver, which can be toned with the more noble metals gold, palladium and platinum, and through double or triple toning produce prints with split tones.’

Origin

Early 19th century: modern Latin, from Pallas, the name given to an asteroid discovered just before the element (see Pallas).

Pronunciation

palladium

/pəˈleɪdiəm//pəˈlādēəm/

Main definitions of palladium in US English:

: palladium1palladium2

palladium2

noun

archaic
  • A safeguard or source of protection.

    • ‘References to the bird are peppered throughout Guatemala's national anthem, in which the quetzal is compared with the condor and the royal eagle and is described as a palladium or protector of the soil.’
    • ‘The philosophy of Descartes established this principle, which is the palladium of science; and thus the third preliminary condition was fulfilled.’
    • ‘The icon of the Virgin of Vladimir acts in a similar way as a palladium of the Russian Church and state.’
    • ‘Vixum is best remembered for installing the Phra Bang as the palladium (protector) of the Lan xang kings.’

Origin

Late Middle English (in the Greek sense): via Latin from Greek palladion, denoting an image of the goddess Pallas (Athene), on which the safety of Troy was believed to depend.

Pronunciation

palladium

/pəˈleɪdiəm//pəˈlādēəm/