DICTIONARY ENTRY
5 SYLLABLES
protactinium
/,proʊtæk'tɪniəm/ · proʊtæktɪniəm
Protactinium has 5 syllables: pro · tac · tin · i · um.
pro
01
tac
02
tin
03
i
04
um
05
noun. A short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead.
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