アクチニウムだった
akuchinyūmudatta
1. Was actinium.
Noun
#192406
1. Was actinium.
1. actinium (Ac)
1. If actinium; Were actinium
1. actinium series; Actinides
1. With actinium; By actinium
1. Was not actinium.; It was not actinium.
1. If actinium; When actinium
1. Actinium.
1. Not actinium.
1. Wasn't actinium.