Meaning Of The Word Promethium
What's the definition of Promethium? Find Promethium meanings, definitions and more at the Real Dictionary online.
Promethium Meaning
| Promethium Definition |
|---|
What's The Definition Of Promethium?
promethium in American English
a radioactive chemical element, one of the rare-earth elements, obtained from fission of uranium or neutron bombardment of neodymium and used in phosphorescent paint, as a power source, X-ray source, etc.: symbol, Pm; at. no., 61 noun: a rare-earth, metallic, trivalent element; at. no.: 61 promethium in British English noun: a radioactive element of the lanthanide series artificially produced by the fission of uranium. Symbol: Pm; atomic no: 61; half-life of most stable isotope, 145Pm: 17.7 years; valency: 3; melting pt: 1042°C; boiling pt: 2460°C (approx.) |
More Definitions
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
Definitions Of The Day
- Flat on one's back ‐
- Serialist ‐ noun: a writer…
- Ragged school ‐ noun: (in Britain, formerly) a free elementary…
- Steam locomotive ‐ noun: a locomotive moved by steam power generated…
- Tilapia ‐ any of a genus (Tilapia) of African cichlid fishes…
- Restrike ‐ to strike again; noun: a coin freshly minted from…
- Centesis ‐ noun: a puncture or perforation; noun: the surgical…
- Acknowledged ‐ commonly recognized or accepted; adjective: recognized…
- Tritubercular ‐ adjective; adjective: (of a structure such as…
- Catarrhally ‐ adverb: in a manner relating to the inflammation…