Definition of platinous in English:

platinous

adjective

Chemistry
  • Of or containing platinum, especially in the divalent state.

Origin

Mid 19th century. From platinum + -ous, after post-classical Latin platinosus. Compare French platineux (1842 in oxyde platineux; probably after Berzelius's post-classical Latin oxydum platinosum.

Pronunciation

platinous

/ˈplatɪnəs//ˈplat(ə)nəs/