actinium
English edit
Chemical element | |
---|---|
Ac | |
Previous: radium (Ra) | |
Next: thorium (Th) |
Etymology edit
Borrowed from French actinium. actin- + -ium.
Pronunciation edit
Noun edit
actinium (usually uncountable, plural actiniums)
- A radioactive, metallic chemical element (symbol: Ac) with an atomic number of 89; found in uranium ores.
Derived terms edit
Related terms edit
Translations edit
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Danish edit
Alternative forms edit
Noun edit
actinium
- actinium
Dutch edit
Chemical element | |
---|---|
Ac | |
Previous: radium (Ra) | |
Next: thorium (Th) |
Etymology edit
Borrowed from French actinium.
Pronunciation edit
Noun edit
actinium n (uncountable)
- actinium [from ca. 1900]
Related terms edit
French edit
Pronunciation edit
Noun edit
actinium m (uncountable)
Further reading edit
- “actinium”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.
Latin edit
Etymology edit
From Ancient Greek ἀκτίς, ἀκτῖν- (aktís, aktîn-, “ray”).
Pronunciation edit
- (Classical) IPA(key): /akˈtiː.ni.um/, [äkˈt̪iːniʊ̃ˑ]
- (modern Italianate Ecclesiastical) IPA(key): /akˈti.ni.um/, [äkˈt̪iːnium]
Noun edit
actīnium n (genitive actīniī); second declension
Declension edit
Second-declension noun (neuter).
Case | Singular | Plural |
---|---|---|
Nominative | actīnium | actīnia |
Genitive | actīniī | actīniōrum |
Dative | actīniō | actīniīs |
Accusative | actīnium | actīnia |
Ablative | actīniō | actīniīs |
Vocative | actīnium | actīnia |
Norwegian Bokmål edit
Chemical element | |
---|---|
Ac | |
Previous: radium (Ra) | |
Next: thorium (Th) |
Etymology edit
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 edit
Noun edit
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 edit
- “actinium” in The Bokmål Dictionary.
- “actinium” in Det Norske Akademis ordbok (NAOB).
- “actinium” in Store norske leksikon