Definition that contains heaviest
- at a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
- heavy of the military or industry; using (or being) the heaviest and most powerful armaments or weapons or equipment
- os a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known
- rn a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health
- radon a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health
- osmium a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known
- atomic number 85 a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
- astatine a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
- atomic number 86 a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health
- atomic number 76 a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known