Protoactinium
nounverified·updated May 18, 2026
a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead
Classifications
Entity Type
Unknown—glossary_import_default_pending_classifier
?unassignedlast reviewed —
Sensitivity
unclassified
Information Class
unclassified
Variants
- synonym
- protactinium
- plural
- Protoactiniums
- possessive
- Protoactinium's
- pluralpossessive
- Protoactiniums'