'osmium' definitions:
Definition of 'osmium'
(from WordNet)
noun
A hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known [syn: osmium, Os, atomic number 76]
Definition of 'osmium'
From: Elements
- Symbol: Os
- Atomic number: 76
- Atomic weight: 190.2
- Hard blue-white metallic transition element. Found with platinum and used in some alloys with platinum and iridium.