Meaning Of The Word Protactinium
What's the definition of Protactinium? Find Protactinium meanings, definitions and more at the Real Dictionary online.
Protactinium Meaning
| Protactinium Definition |
|---|
What's The Definition Of Protactinium?
protactinium in American English
a rare, radioactive, metallic chemical element, one of the actinides, found in pitchblende: symbol, Pa; at. no., 91 noun: a radioactive, metallic element; at. no.: 91 protactinium in British English noun: a toxic radioactive metallic element that occurs in uranium ores and is produced by neutron irradiation of thorium. Symbol: Pa; atomic no: 91; half-life of the most stable isotope, 231Pa: 32 500 years; valency: 4 or 5; relative density: 15.37 (calc.); mel |
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
- Incorp ‐ incorporated
- Proct- ‐ combining form: indicating the anus or rectum…
- Green-eyed monster ‐ noun: jealousy
- Stereoregularity ‐ noun: the degree to which successive configurations…
- Encaustic tile ‐ noun: a tile produced using the encaustic…
- Empowering ‐ adjective: having qualities that give a person…
- Alack ‐ used to express regret, surprise, dismay, etc…
- Thicket ‐ a thick growth of shrubs, underbrush, or small…
- Outcropped ‐ noun: part of a rock formation or mineral vein…
- Solid fuel ‐ any of various rocket fuels and oxidizers that…