Search Result：protactinium
protactinium 
(TTS Sound)
(TTS Sound)KK Pronunciation
〔 ˏprotækˋtInIәm 〕
Pronunciation
〔 ˏproutækˊtiniәm 〕
Overview of noun protactinium
The noun protactinium has 1 sense
- protactinium, protoactinium, Pa, atomic number 91 -- (a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead)