Meaning Of The Word Actinium
What's the definition of Actinium? Find Actinium meanings, definitions and more at the Real Dictionary online.
Actinium Meaning
| Actinium Definition |
|---|
What's The Definition Of Actinium?
actinium in American English
a white, radioactive, metallic chemical element, the first member of the actinide series, found in pitchblende and other minerals or formed in reactors by the neutron irradiation of radium: symbol, Ac; at. no., 89 noun: a radioactive silver-white metallic element that glows blue in the dark, resembling the rare earths in chemical behavior and valence; at. no.: 89; at. wt.: 227 actinium in British English noun: a radioactive element of the actinide series, occurring as a decay product of uranium. It is used as an alpha-particle source and in neutron production. Symbol: Ac; atomic no: 89; half-life of most stable isotope,227Ac: 21.6 years; relative density: 10.07 |
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
- MEX ‐ Mexican; abbreviation: Mexican; abbreviation for:…
- Featherbone ‐ noun: a substitute for whalebone, made from the…
- Dionysiac ‐ of Dionysus or the Dionysia; adjective: of or…
- Guv ‐ governor (sense 1) governor (sense 1b) governor…
- Museumgoer ‐ noun: a frequent visitor…
- Persecutory ‐ adjective: involving or characteristic of…
- Gross negligence ‐ noun: extreme carelessness that shows wilful or…
- Curb ball ‐ noun: stoop ball played off a…
- Network provider ‐ noun: a business or organization that provides…
- Babylonish ‐ adjective