Definition of platinum noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈplætɪnəm//
; NAmE NAmE//ˈplætɪnəm//
[uncountable] (symbol Pt) Materials and properties
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a chemical element. Platinum is a silver-grey precious metal, used in making expensive jewellery and in industry. See related entries: Materials and properties Word Originearly 19th cent.: alteration of earlier platina, from Spanish, diminutive of plata ‘silver’.
See the Oxford Advanced American Dictionary entry: platinum