protactinium
protactinium · protactiniums
протактиній
протактиний
Protactinium
A chemical element with atomic number 91A chemical element (symbol Pa) with atomic number 91. A dense, silvery-gray actinide metal.
UK/ˌpɹəʊ.tækˈtɪn.i.əm/US/ˌpɹoʊ.tækˈtɪn.i.əm/
Meaning
2 senses(uncountable)A chemical element (symbol Pa) with atomic number 91. A dense, silvery-gray actinide metal.
Protactinium
протакти́нийprotaktínij
протакти́нійprotaktýnij
A chemical element (symbol Pa) with atomic number 91. A dense, silvery-gray actinide metal.
(countable)An atom of this element.
More definitions
- a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead
Translations
9 languagesУкраїнська
By meaning 1
chemical element:
Русский
By meaning 1
chemical element:
Deutsch
By meaning 1
chemical element:
Forms
plural: protactiniums| Singular | protactinium |
|---|---|
| Plural | protactiniums |
regular
Synonyms
3 synonymsprotoactinium
Close in meaning
- a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead:protoactiniumPaatomic number 91
Word family
4 related wordsRelatedactinium
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable
See also
neighbours in the dictionaryDictionary text adapted from Wiktionary (Wiktionary contributors, CC BY-SA 4.0) and Open English WordNet / Princeton WordNet (CC BY 4.0, WordNet License); shared under CC BY-SA 4.0. Example sentences and recordings are credited where they appear.