. . "Os"@en-us . . "atomic number 76"@en-us . . . "0"^^ . "114647907"^^ . "osmium"@en-us . . "113809439"@en-us . . . "osmium"^^ . "0"^^ . . "14647907-n"^^ . . . . . . . . . . "a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known"@en-us . . . . . . . . . .