actinium
See also: Actinium
English
Chemical element | |
---|---|
Ac | |
Previous: radium (Ra) | |
Next: thorium (Th) |
Pronunciation
- enPR: ăktĭn'ēəm, IPA(key): /ækˈtɪniəm/
Audio (Southern England) (file)
Noun
actinium (usually uncountable, plural actiniums)
- A radioactive, metallic chemical element (symbol: Ac) with an atomic number of 89; found in uranium ores.
Derived terms
Derived terms
- actinate
- actiniferous
- actinide
- actinium A
- actinium B
- actinium C
- actinium emanation
- actinium-K
- actinium fluoride
- actinium series
- eka-actinium
- protactinium
- radioactinium
Translations
chemical element
|
Dutch
Chemical element | |
---|---|
Ac | |
Previous: radium (Ra) | |
Next: thorium (Th) |
Pronunciation
- IPA(key): /ɑkˈti.ni.ʏm/
Audio (file) - Hyphenation: ac‧ti‧ni‧um
Related terms
French
Pronunciation
- IPA(key): /ak.ti.njɔm/
Audio (file)
Further reading
- “actinium”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.
Latin
Etymology
From Ancient Greek ἀκτίς, ἀκτῖν- (aktís, aktîn-, “ray”).
Pronunciation
- (Classical) IPA(key): /akˈtiː.ni.um/, [äkˈt̪iːniʊ̃ˑ]
- (modern Italianate Ecclesiastical) IPA(key): /akˈti.ni.um/, [äkˈt̪iːnium]
Norwegian Bokmål
Chemical element | |
---|---|
Ac | |
Previous: radium (Ra) | |
Next: thorium (Th) |
Etymology
First part actin- from Ancient Greek ἀκτίς (aktís, “ray, beam”), from Proto-Hellenic [Term?], from Proto-Indo-European *nókʷ-t-u-s ~ *n̥kʷ-t-éw-s, from *nókʷts (“night”), from *negʷ- (“bare, naked”). Last part from Latin -ium (forms names of chemical elements), from -ius (forms adjectives), from Old Latin -iōs, from Proto-Italic *-jos (forms comparative adverbs), from Proto-Indo-European *-yōs ~ *-is- (forms adjectives).
Pronunciation
- IPA(key): /akˈtiːnɪʉm/
Audio (file) - Rhymes: -ʉm
- Hyphenation: ac‧ti‧ni‧um
Noun
actinium n (definite singular actiniumet, indefinite plural actinium, definite plural actiniuma or actiniumene)
- (organic chemistry) actinium (a radioactive, metallic chemical element (symbol: Ac) with an atomic number of 89; found in uranium ores)
- 2015, periodesystemet.no:
- actinium får nitrogenet i luften til å lyse blått
- actinium causes the nitrogen in the air to glow blue
References
- “actinium” in The Bokmål Dictionary.
- “actinium” in Det Norske Akademis ordbok (NAOB).
- “actinium” in Store norske leksikon
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