| Chemical element | |
|---|---|
| Ac | |
| Previous:radium (Ra) | |
| Next:thorium (Th) | |
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Borrowed fromFrenchactinium.actin- +-ium.
| Audio(Southern England): | (file) |
actinium (usuallyuncountable,pluralactiniums)
|
| Chemical element | |
|---|---|
| Ac | |
| Previous:radium (Ra) | |
| Next:thorium (Th) | |
FromAncient Greekἀκτίς(aktís) +-ium.
actinium (singular definiteactiniummet,not used in plural form)
| neuter gender | singular | |
|---|---|---|
| indefinite | definite | |
| nominative | actinium | actiniummet |
| genitive | actiniums | actiniummets |
| Chemical element | |
|---|---|
| Ac | |
| Previous:radium (Ra) | |
| Next:thorium (Th) | |
actinium n (uncountable)
actinium m (uncountable)
FromAncient Greekἀκτίς, ἀκτῖν-(aktís, aktîn-,“ray”).
actīnium n (genitiveactīniī);second declension
Second-declension noun (neuter).
| singular | plural | |
|---|---|---|
| nominative | actīnium | actīnia |
| genitive | actīniī | actīniōrum |
| dative | actīniō | actīniīs |
| accusative | actīnium | actīnia |
| ablative | actīniō | actīniīs |
| vocative | actīnium | actīnia |
| Chemical element | |
|---|---|
| Ac | |
| Previous:radium (Ra) | |
| Next:thorium (Th) | |
First partactin- fromAncient Greekἀκτίς(aktís,“ray, beam”), fromProto-Hellenic[Term?], fromProto-Indo-European*nókʷ-t-u-s ~ *n̥kʷ-t-éw-s, from*nókʷts(“night”), from*negʷ-(“bare, naked”). Last part fromLatin-ium(forms names of chemical elements), from-ius(forms adjectives), fromOld Latin-iōs, fromProto-Italic*-jos(forms comparative adverbs), fromProto-Indo-European*-yōs ~ *-is-(forms adjectives).
actinium n (definite singularactiniumet,indefinite pluralactinium,definite pluralactiniumaoractiniumene)
