English - English
Definition of protactinium in English English dictionary
- a chemical element (symbol Pa) with atomic number 91
- {i} radioactive metallic element
- a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead
- eka-protactinium
- Unbitrium (Ubt), an unsynthesized chemical element with atomic number 123
- eka-protactinium
- Unquadunium (Uqu), an unsynthesized chemical element with atomic number 141
- protactinium.
- brevium
Related Terms
protactinium
Hyphenation
pro·tac·tin·i·umSynonyms
protoactiniumPronunciation
Resimler
History
Favorites