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Define
PROTOACTINIUM
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PROTOACTINIUM
a radioactive element that yields actinium on disintegration [n -S]
Previous Words
PROTISTANS
PROTISTIC
PROTISTOLOGIES
PROTISTOLOGIST
PROTISTOLOGISTS
PROTISTOLOGY
PROTISTS
PROTIUM
PROTIUMS
PROTO
Next Words
PROTOACTINIUMS
PROTOAVIS
PROTOAVISES
PROTOCHORDATE
PROTOCHORDATES
PROTOCOCCAL
PROTOCOL
PROTOCOLED
PROTOCOLIC
PROTOCOLING