Promethium
| Date Released: |
|
|
Nov. 05, 1999 |
promethium n. radioactive metallic element of the lanthanide series, found in nuclear waste. [Prometheus: see *Promethean] |
Promethium | Date Released: |
|
|
Nov. 05, 1999 |
promethium n. radioactive metallic element of the lanthanide series, found in nuclear waste. [Prometheus: see *Promethean] |