(adjective) See more. platinum: Meaning and Definition of. The Platinum Rule is a much more empathetic, sensitive moral guideline than its predecessor, the Golden Rule, which ignores the wishes and preferences of the recipients of the behaviour in favor of imposing the giver's preferences onto others in a misguided attempt at kindness. Colourful is the Netherlands’ first circular collection of ‘green furniture’, with vases, planters, bowls and columns. A soft, ductile, malleable, silver-white metallic element that usually occurs with osmium, iridium, palladium, or nickel. 1805–15;