Röntgenium
roentgenium
Roentgenium
roentgenium
Röntgen
X-ray
röntgen
X-ray
Röntgenbild
radiograph
X-ray
Oxygenium
oxygen
ringen um
contend
Ingenium
angel
Ruthenium
ruthenium
Drontheim
Trondheim
Röntgenblick
X-ray vision
Ontogenie
ontogeny
Kontinuum
continuum
kongenial
congenial
Rhenium
rhenium
Fortunium
Fortunian
Santonium
Santonian
Tortonium
Tortonian
Aeronium
Aeronian
Front-End
front end