Definition of roentgenium
: a short-lived radioactive element produced artificially — see element table
Origin and Etymology of roentgenium
New Latin; from the fact that the element was synthesized on the centennial of Röntgen's discovery of X-rays
First Known Use: 2004
Seen and Heard
What made you want to look up roentgenium? Please tell us where you read or heard it (including the quote, if possible).